U.S. public vehicle records

Yamaha FZ6 engine problems

32 complaint narratives mention engine terms.

Key facts

50 owner complaints analyzed

0 distinct recall campaigns

5,615 mi median reported failure mileage

Scope: 2004 to 2006 model years. Data updated: 2026-10-01 (October 1, 2026). 43 complaints include usable failure mileage. View data status.

Engine operation evidence

32 of 50 complaints match this topic (64.0%). The keyword filter can include complaints that mention a transmission without reporting its failure. View matching rules.

Owner report 10118064 · 2005-04-18 (April 18, 2005)

1-AVERAGE USAGE, 2-MOTORCYCLES WOULD STALL SPORADICALLY, RPMS WOULD VARY CONSIDERABLY, A LOT OF HESITATION, VARIABLE IDLING, BAD GAS CONSUMPTION. A FAILURE OF THE MOTORCYCLE TO CEASE THROTTLE OPERATIONS THROUGH MID-CORNER DURING A TURN WOULD INEVITABLY CAUSE THE MOTORCYCLE AND ITS RIDER TO LOSE TRACTION AT THE REAR WHEELS. FURTHER CONSEQUENCES WOULD BE DEATH TO THE RIDER IN EXTREME, BUT HIGHLY LIKELY CIRCUMSTANCES. 3-THERE WAS A DEFECTIVE THROTTLE POSITIONING SENSOR WITH THE 2004-2005 YAMAHA FZ6 MOTORCYCLES. YAMAHA HAS SO FAR FAILED TO AN…

Owner-reported narrative. 8,700 miles reported. Look up ODI 10118064 at NHTSA ↗

Owner report 10118434 · 2005-04-25 (April 25, 2005)

IDLE SUDDENLY GETS ROUGH THEN ENGINE QUITS/STALLS AT RANDOM TIMES, MOST OFTEN AT LOW SPEED AFTER DOWNSHIFTING, BUT HAS HAPPENED AT HIGHWAY SPEEDS ON PARKWAY IN TRAFFIC. I'M INVOLVED WITH AN ONLINE USERS GROUP OF FZ6 OWNERS (ABOUT 100-150 IN THE GROUP) AND ABOUT 20 - 25 PEOPLE HAVE HAD TO GET THE THROTTLE POSITION SENSOR (TPS) REPLACED TO CORRECT THE PROBLEM. (WITHIN THE 1ST YEAR OF OWNERSHIP) I BELIEVE MY BIKE IS STARTING TO EXHIBIT SOME OF THE SAME CHARACTERISTICS THEY ALL HAD AND FEEL YAMAHA SHOULD LOOK INTO THIS FOR A RECALL BEFORE SO…

Owner-reported narrative. 2,000 miles reported. Look up ODI 10118434 at NHTSA ↗

Owner report 10118576 · 2005-04-27 (April 27, 2005)

1) AT APPROXIMATELY 8000 MILES ON THE ODOMETER, MY YAMAHA FZ6 BEGAN EXHIBITING PERIODIC STALLING. WHEN UNDER NORMAL POWER, THE BIKE EXHIBITED A MODERATE LOSS OF POWER, WITH A COMPLETE ENGINE STALL ONCE THE CLUTCH WAS DISENGAGED (WHILE STOPPING IN TRAFFIC OR PARKING). THESE SYMPTOMS INCREASED IN FREQUENCY UNTIL IT WAS HAPPENING SEVERAL TIMES PER DAY. 2) THE CONSEQUENCES OF THE FAILURE WERE GENERALLY MINIMAL, WITH THE EXCEPTION OF STALLING IN STOP-AND-GO TRAFFIC. ON MORE THAN ONE OCCASION, THE STALLING PREVENTED ME FROM MOVING WHEN TRAFFIC …

Owner-reported narrative. 8,000 miles reported. Look up ODI 10118576 at NHTSA ↗

Owner report 10118605 · 2005-04-27 (April 27, 2005)

THROTTLE POSITION SENSOR ISSUE WELL DOCUMENTED ON HTTP://FORUMS.SPORTBIKES.NET/FORUMS...088#POST1774088 STALLING ON FREEWAY, COULD CAUSE ACCIDENT. HAS NOT BEEN FIXED BY YAMAHA.

Owner-reported narrative. 8,950 miles reported. Look up ODI 10118605 at NHTSA ↗

Owner report 10118618 · 2005-04-28 (April 28, 2005)

MY MOTORCYCLE WILL STALL AND/OR RUN ROUGH OCCASIONALLY, AND NOT IDLE WITHOUT ADDITIONAL THROTTLE INPUT. IF I TURN THE IGNITION OFF AND RESTART THE MOTORCYCLE IT WILL FIX THE PROBLEM FOR A PERIOD OF TIME. I AM VERY CONCERNED THAT THE MOTORCYCLE WILL ENCOUNTER THIS PROBLEM WHILE TURNING AND CAUSING INSTABILITY THAT MIGHT CONTRIBUTE TO A CRASH. IN ADDITION, I DO NOT LIKE HAVING THE THOUGHT OF THIS PROBLEM IN MY MIND EVERYTIME I AM RIDING, AS IT TAKES ENOUGH CONCENTRATION TO AVOID OTHER VEHICLES AND MONITOR ROAD CONDITIONS. I HAVE NOT REPAIRED TH…

Owner-reported narrative. 7,200 miles reported. Look up ODI 10118618 at NHTSA ↗

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Vehicle analysis explorer

Inspect model-year patterns, reported mileage, monthly activity and the evidence behind each signal.

Data completeness

50 unique complaints in this selection. Analysis snapshot: 2026-10-01.

86.0%Usable mileage43 / 50 records

100.0%Valid incident date50 / 50 records

100.0%Valid filing date50 / 50 records

100.0%Ordered incident and filing dates50 / 50 records

Missing, zero and invalid mileage is excluded. Dates after the snapshot are excluded. Examples are limited selections, not a representative sample.

Problems by model year

Model-wide comparison of the eight most reported components across the model. Cells show counts and shares within each model year. Open a cell for source examples.

From model yearThrough model year

Component complaint heatmap
Component	2004	2005	2006
Fuel System, Gasoline:Fuel Injection System	926.5% ODI 10118576 · 8,000 mi 1) AT APPROXIMATELY 8000 MILES ON THE ODOMETER, MY YAMAHA FZ6 BEGAN EXHIBITING PERIODIC STALLING. WHEN UNDER NORMAL POWER, THE BIKE EXHIBITED A MODERATE LOSS OF POWER, WITH A COMPLETE ENGINE STALL ONCE THE CLUTCH WAS DISENGAGED (WHILE STOPPING IN TRAFFIC OR PARKING). THESE SYMPTOMS INCREASED IN FREQUENCY UNTIL IT WAS HAPPENING SEVERAL TIMES PER DAY. 2) THE CONSEQUENCES OF THE FAILURE WERE GENERALLY MINIMAL, WITH THE EXCEPTION OF STALLING IN STOP-AND-GO TRAFFIC. ON MORE THAN ONE OCCASION, THE STALLING PREVENTED ME FROM MOVING WHEN TRAFFIC … Look up ODI 10118576 at NHTSA ↗	17.1% ODI 10139422 · 7,600 mi ROUGH RUNNING AT SMALL THROTTLE OPENINGS, STALLING. NOT CORRECTED YET. *JB Look up ODI 10139422 at NHTSA ↗	00.0% No examples available for this selection.
Vehicle Speed Control	617.6% ODI 10118730 · 4,400 mi 1. BIKE WAS BADLY HESITATING STARTING OFF IN 1ST GEAR FROM A STOP. 2. TURNING THE THROTTLE TO ACCELERATE WOULD SOMETIMES PITCH ME FORWARD ON THE START AS THE ENGINE HESITATED, THEN TURNING IT A BIT MORE WOULD ALMOST THROW ME OFF AS IT ACCELERATED. 3. ONE DEALERSHIP TRIED ADJUSTING THE THROTTLE POSITION SENSOR (TPS) AND IT ACTUALLY MADE THE PROBLEM WORSE. THE NEXT DEALERSHIP REPLACED THE TPS UNIT AND IT HAS BEEN RUNNING FINE SINCE. *AK Look up ODI 10118730 at NHTSA ↗	321.4% ODI 10157605 · 4,800 mi I AM AWARE OF SEVERAL DOZEN PEOPLE WHO HAVE HAD THE SAME PROBLEM I AM NOW HAVING WITH FAILURE OF THE THROTTLE POSITION SENSOR (TPS) ON A 2004-2005 YAMAHA FZ6. THIS CAUSES A NEW VEHICLE TO RUN POORLY AND STALL FREQUENTLY UNTIL THE PART IS REPLACED. *JB Look up ODI 10157605 at NHTSA ↗	00.0% No examples available for this selection.
Electrical System	514.7% ODI 10121061 · 5,000 mi 2004 YAMAHA FZ6 5K+ MILES. WHEN CRUISING AND KEEPING THE ACCELERATOR CONSTANT, ONE EXPERIENCES SUDDEN CHANGES IN ENGINE-TO-TRANSMISSION POWER FEED: THE BIKE SUDDENLY STARTS TO ACCELERATE OR SLOW DOWN. ONE MUST COMPENSATE CONSTATNLY FOR THAT ERRATIC ENGINE BEHAVIOR, WHICH TAKES AWAY FROM PAYING ATTENTION TO THE ROAD. IF DOWNSHIFTING, UPSHIFTING OR CLUTCH DISENGAGEMENT IS PERFORMED DURING THE ENGINE FALTERING, THE RESULT IS A STALLED OUT ENGINE UNLESS SHIFTING IS PERFORMED VERY QUICKLY. STALLING OUT WHILE DOWNSHIFTING FOR A FULL STOP AT AN … Look up ODI 10121061 at NHTSA ↗	17.1% ODI 11453978 Hello, i ride this Yamaha FZ-6 motorcycle and I experience poor idling and engine stalls during riding, and last time this nearly led to accident, because the motorcycle slowed down in front of an overpassing automobile. I have bought this bike imported from USA. I am situated in Bulgaria, Europe. I saw there is a recall action about faulty TPS sensor. Kindly requesting any help for replacing this sensor by recall action. Thank you in advance for your kind support. [XXX] INFORMATION Redacted PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5… Look up ODI 11453978 at NHTSA ↗	150.0% ODI 10239618 · 1,000 mi TL*THE CONTACT OWNS A 2006 YAMAHA FZ6. THE CONTACT STATED THAT THE DEALER REPLACED THE BATTERY FOUR TIMES. THE HEADLIGHT AND STARTER WERE REPLACED THREE TIMES. ON AUGUST 23, 2008, THE BATTERY FAILED AGAIN. THE VEHICLE WAS TOWED TO THE CONTACT'S RESIDENCE. SHE CHARGED THE BATTERY FOR SEVERAL HOURS, BUT THE VEHICLE WOULD NOT RESTART. THE VEHICLE WILL BE TAKEN TO THE DEALER FOR A DIAGNOSIS. THE FAILURE MILEAGE WAS 1,000 AND CURRENT MILEAGE WAS 14,000. Look up ODI 10239618 at NHTSA ↗
Fuel System, Gasoline:Delivery	514.7% ODI 10118064 · 8,700 mi 1-AVERAGE USAGE, 2-MOTORCYCLES WOULD STALL SPORADICALLY, RPMS WOULD VARY CONSIDERABLY, A LOT OF HESITATION, VARIABLE IDLING, BAD GAS CONSUMPTION. A FAILURE OF THE MOTORCYCLE TO CEASE THROTTLE OPERATIONS THROUGH MID-CORNER DURING A TURN WOULD INEVITABLY CAUSE THE MOTORCYCLE AND ITS RIDER TO LOSE TRACTION AT THE REAR WHEELS. FURTHER CONSEQUENCES WOULD BE DEATH TO THE RIDER IN EXTREME, BUT HIGHLY LIKELY CIRCUMSTANCES. 3-THERE WAS A DEFECTIVE THROTTLE POSITIONING SENSOR WITH THE 2004-2005 YAMAHA FZ6 MOTORCYCLES. YAMAHA HAS SO FAR FAILED TO AN… Look up ODI 10118064 at NHTSA ↗	214.3% ODI 10136746 · 100 mi 1) 2005 YAMAHA YZF R1. NORMAL EVERYDAY RIDING FOR 10,000 MILES. AFTER WORK I WARMED UP MY MOTORCYCLE TO 170 DEG F. 2) WHEN I SLOWED DOWN THE RPM'S DROPPED UNDER 1,000 AND THE MOTORCYCLE STALLS/DIES. IT DIED 3 MORE TIMES BEFORE I COULD GET TO A PLACE TO PULL OVER. AFTER I PULLED OVER I GOT OFF MY MOTORCYCLE AND THEN LET IT IDLE. THE IDLE WAS LOW BUT DID NOT DIE. I THEN RIDE MORE AND IT HAPPENED 1 MORE TIME. I HAD TO REV THE ENGINE TO KEEP IT FROM DYING. I STOPPED AND LET THE BIKE SIT FOR OVER 1 HOUR. AFTER I STARTED IT BACK UP EVERYTHIN… Look up ODI 10136746 at NHTSA ↗	00.0% No examples available for this selection.
Engine And Engine Cooling:Engine	25.9% ODI 10134693 1. BIKE STARTED AND WARMED UP FINE. AFTER ABOUT AN HOUR OF RIDING BIKE WAS IDLING VERY LOW AT A STOP SIGN (800-900 RPM). POWER DELIVERY WAS CHOPPY FROM A STOP ALSO. AT THE NEXT STOP LIGHT THE BIKE STALLED, AND I NEEDED TO USE THE THROTTLE TO KEEP IT IDLING . I SHUT THE BIKE OFF AT SOME POINT, TURNED IT BACK ON AND THE BIKE WAS BACK TO NORMAL. AFTER ABOUT 10 MORE MINUTES OF RIDING THE BIKE STALLED AT ANOTHER STOP LIGHT. SINCE FIRST OCCURRENCE THIS PROBLEM HAS BEEN INTERMITTENT BUT USUALLY GOES AWAY IF THE BIKE IS SHUT OFF, THEN TURNED BACK ON. … Look up ODI 10134693 at NHTSA ↗	214.3% ODI 10138672 · 1,200 mi DT: THE CALLER SAID THAT WHILE HE RIDING THE ENGINE ON MOTORCYCLE BROKE OPEN AND ALL THE FLUID SPRAYED OUT. THE CALLER WAS GOING ABOUT 60 MPH. HE ALMOST LOST CONTROL ,BUT WAS ABLE TO STOP AND GET OFF THE MOTORCYCLE. HE HAD TO HAVE IT TOWED. DEALER , WHOSAID THEY WILL LOOK AT IT. THE CALLER CONTACTED THE MANUFACTURER AND LEFT A VOICE MAIL. MOTORCYCLE IS A YAMAHA R-1. *AK Look up ODI 10138672 at NHTSA ↗	150.0% ODI 10166197 STICKY VALVES ON YAMAHA MOTORCYCLES,THERE HAVE BEEN NUMEROUS REPORTS OF ENGINES LOCKING UP AND STALLING . I QUESTIONED MY DEALER AND HE DOESN'T KNOW ANYTHING ABOUT IT [ SUPPOSEDLY ] I WANT IT ON THE RECORD IN CASE OF AN ACCIDENT . IT HASN'T HAPPENED YET BUT YAMAHA IS AWARE OF THE PROBLEM AND IT SHOULD BE RECTIFIED BEFORE A SERIOUS INJURY OCCURS . THE VALVE SPRINGS ARE TOO WEAK AND SHOULD BE REPLACED , THE RESULTING CARBON BUILD UP CAUSES THE ENGINE TO STALL AND SPIT FIRE OUT OF THE EXHAUST . THIS PROBLEM SHOULD BE ADDRESSED NOW BEFORE AN ACCID… Look up ODI 10166197 at NHTSA ↗
Engine And Engine Cooling	00.0% No examples available for this selection.	428.6% ODI 10125688 · 100 mi DT: LOOSE BOLTS ALL OVER THE MOTORCYCLE NOT FROM THE DEALERSHIP, BUT FROM FACTORY. ALSO, FRONT DISC BRAKE JUNCTION BOX FELL OFF/ CASING MOTOR BOLTS WERE LOOSE, AND TAIL LIGHT WAS ABOUT TO FALL OFF. THIS MOTORCYCLE IS A COUPLE OF MONTHS OLD AND HAS ABOUT 1,000 MILES ON IT. CONSUMER OWNED THREE ROADSTARS, HOWEVER, THIS ONE HAS QUALITY CONTROL PROBLEMS. THE DAY AFTER THE MOTORCYCLE WAS PURCHASED DRIVER HEARD CLANKING NOISES. ROUTING OF CLUTCH CABLE WAS RUBBING AGAINST WINDSHIELD AND CHEWING UP THE CABLE. IN ADDITION, LOWER ROUTING, THE R… Look up ODI 10125688 at NHTSA ↗	00.0% No examples available for this selection.
Electrical System:Ignition	12.9% ODI 10169691 · 3,000 mi YAMAHA 2004 FZ6 BIKE RUNS GOOD FOR A WHILE, AND ALL THE SUDDEN THE ENGINE LOSES 90 % OF ITS POWER, I HAVE TO TURN THE KEY OFF, THEN BACK ON TO REGAIN POWER WHILE IN TRAFFIC, ONE TIME THIS HAPPEN I GAVE IT TO MUCH GAS TO GET OUT OF TRAFFIC ,AND I FLIPPED THE BIKE OVER IN THE MIDDLE OF THE STREET. IT WAS MY LUCKY DAY NOBODY RAN OVER ME. LOOKING AT THIS WEB SITE , THERE IS A LOT OF OTHER FZ6 RIDERS WITH THE SAME PROBLEM, I HAVE ASKED 4 YAMAHA DEALERS IF ANYONE ELSE IS HAVING THIS PROBLEM AND THEY ALL SAID NO? WELL THEY SURE DO BY LOOKING ON THI… Look up ODI 10169691 at NHTSA ↗	214.3% ODI 10137531 · 7,500 mi THE MOTORCYCLE LOSES IGNITION, AS THOUGH THE "KILL SWITCH" WAS PRESSED. THE RPMS DROP TO ZERO AND THERE IS NO THROTTLE RESPONSE, ALTHOUGH LIGHTS AND GAUGES CONTINUE TO WORK. *JB Look up ODI 10137531 at NHTSA ↗	00.0% No examples available for this selection.
Fuel System, Other	38.8% ODI 10118434 · 2,000 mi IDLE SUDDENLY GETS ROUGH THEN ENGINE QUITS/STALLS AT RANDOM TIMES, MOST OFTEN AT LOW SPEED AFTER DOWNSHIFTING, BUT HAS HAPPENED AT HIGHWAY SPEEDS ON PARKWAY IN TRAFFIC. I'M INVOLVED WITH AN ONLINE USERS GROUP OF FZ6 OWNERS (ABOUT 100-150 IN THE GROUP) AND ABOUT 20 - 25 PEOPLE HAVE HAD TO GET THE THROTTLE POSITION SENSOR (TPS) REPLACED TO CORRECT THE PROBLEM. (WITHIN THE 1ST YEAR OF OWNERSHIP) I BELIEVE MY BIKE IS STARTING TO EXHIBIT SOME OF THE SAME CHARACTERISTICS THEY ALL HAD AND FEEL YAMAHA SHOULD LOOK INTO THIS FOR A RECALL BEFORE SO… Look up ODI 10118434 at NHTSA ↗	00.0% No examples available for this selection.	00.0% No examples available for this selection.

Darker cells indicate a larger share of submitted complaints. Components overlap. This measures complaint composition, not failure probability.

Failure mileage by component

Median and middle 50% of usable owner-reported mileages. Ranges require at least five records.

Component failure mileage distribution
Component	Mileage range (25th–75th percentile)	Median	Usable records	Examples
Fuel System, Gasoline:Fuel Injection System	5,461–8,400 mi	7,700 mi	8	ODI 10118576 · 8,000 mi 1) AT APPROXIMATELY 8000 MILES ON THE ODOMETER, MY YAMAHA FZ6 BEGAN EXHIBITING PERIODIC STALLING. WHEN UNDER NORMAL POWER, THE BIKE EXHIBITED A MODERATE LOSS OF POWER, WITH A COMPLETE ENGINE STALL ONCE THE CLUTCH WAS DISENGAGED (WHILE STOPPING IN TRAFFIC OR PARKING). THESE SYMPTOMS INCREASED IN FREQUENCY UNTIL IT WAS HAPPENING SEVERAL TIMES PER DAY. 2) THE CONSEQUENCES OF THE FAILURE WERE GENERALLY MINIMAL, WITH THE EXCEPTION OF STALLING IN STOP-AND-GO TRAFFIC. ON MORE THAN ONE OCCASION, THE STALLING PREVENTED ME FROM MOVING WHEN TRAFFIC … Look up ODI 10118576 at NHTSA ↗ ODI 10125026 · 9,600 mi I WAS RETURNING HOME TO PLANO, TX FROM A WEEKEND TRIP TO COLORADO. I WAS ABOUT AN HOUR AWAY FROM HOME, WHEN I STARTED TO EXPERIENCE ENGINE HESITATION WHENEVER I RELEASED AND REAPPLIED THE THROTTLE. THE NEXT DAY, THE HESITATION WAS GONE, BUT I NOTICED THAT MY FUEL MILEAGE HAD GONE WAY DOWN (FORMERLY 42-45 MPG TO THE CURRENT 35 MPG). THE ENGINE IS ALSO RUNNING RICH, ENOUGH THAT I CAN SMELL UNBURNT FUEL IN THE EXHAUST. THE ENGINE ALSO HAS STARTED TO IDLE ERRATICALLY, FLUCTUATING IN RPMS. Look up ODI 10125026 at NHTSA ↗ ODI 10127497 · 5,000 mi THE MOTORCYCLE STALLED REPEATEDLY IN HIGHWAY TRAFFIC. Look up ODI 10127497 at NHTSA ↗
Vehicle Speed Control	4,475–11,000 mi	4,800 mi	7	ODI 10118730 · 4,400 mi 1. BIKE WAS BADLY HESITATING STARTING OFF IN 1ST GEAR FROM A STOP. 2. TURNING THE THROTTLE TO ACCELERATE WOULD SOMETIMES PITCH ME FORWARD ON THE START AS THE ENGINE HESITATED, THEN TURNING IT A BIT MORE WOULD ALMOST THROW ME OFF AS IT ACCELERATED. 3. ONE DEALERSHIP TRIED ADJUSTING THE THROTTLE POSITION SENSOR (TPS) AND IT ACTUALLY MADE THE PROBLEM WORSE. THE NEXT DEALERSHIP REPLACED THE TPS UNIT AND IT HAS BEEN RUNNING FINE SINCE. AK Look up ODI 10118730 at NHTSA ↗ ODI 10118772 · 100 mi TPS CAUSING STALLING AND ERRATIC IDLE. PROBLEM OCCURS MORE WHEN BIKE IS WARM, OFF, THEN RE-STARTED. HAVE ONLY HAD IT STALL ONCE WHILE RIDING. HAPPENS MORE OFTEN AS ABOVE. AK Look up ODI 10118772 at NHTSA ↗ ODI 10132562 · 4,550 mi BIKE STALLS WHEN CLUTCH IS PULLED IN. RPM'S DROP TO ZERO. WAS ALMOST RUN OVER BY TRAFFIC BEHIND ME WHEN ENGINE STALLS. INJURED MYSELF (FOOT/ANKLE) WHEN TRYING TO PUSH THE BIKE OFF THE ROAD (SO I WOULDN'T BE RUN OVER). I'VE BEEN TOLD BY MANY FZ6 RIDERS THAT MANY OF THE FZ6 BIKES HAVE DEFECTIVE THROTTLE POSITIONING SENSORS (TPS) AND THAT YAMAHA HAS NOT RECOGNIZED THE PROBLEM. I BELIEVE IT TO BE A VERY SERIOUS SAFETY ISSUE. SOONER OR LATER, SOMEONE IS GOING TO GET RUN OVER BECAUSE OF THIS DEFECTIVE SENSOR. *NM Look up ODI 10132562 at NHTSA ↗
Electrical System	4,663–7,625 mi	5,750 mi	6	ODI 10121061 · 5,000 mi 2004 YAMAHA FZ6 5K+ MILES. WHEN CRUISING AND KEEPING THE ACCELERATOR CONSTANT, ONE EXPERIENCES SUDDEN CHANGES IN ENGINE-TO-TRANSMISSION POWER FEED: THE BIKE SUDDENLY STARTS TO ACCELERATE OR SLOW DOWN. ONE MUST COMPENSATE CONSTATNLY FOR THAT ERRATIC ENGINE BEHAVIOR, WHICH TAKES AWAY FROM PAYING ATTENTION TO THE ROAD. IF DOWNSHIFTING, UPSHIFTING OR CLUTCH DISENGAGEMENT IS PERFORMED DURING THE ENGINE FALTERING, THE RESULT IS A STALLED OUT ENGINE UNLESS SHIFTING IS PERFORMED VERY QUICKLY. STALLING OUT WHILE DOWNSHIFTING FOR A FULL STOP AT AN … Look up ODI 10121061 at NHTSA ↗ ODI 10132562 · 4,550 mi BIKE STALLS WHEN CLUTCH IS PULLED IN. RPM'S DROP TO ZERO. WAS ALMOST RUN OVER BY TRAFFIC BEHIND ME WHEN ENGINE STALLS. INJURED MYSELF (FOOT/ANKLE) WHEN TRYING TO PUSH THE BIKE OFF THE ROAD (SO I WOULDN'T BE RUN OVER). I'VE BEEN TOLD BY MANY FZ6 RIDERS THAT MANY OF THE FZ6 BIKES HAVE DEFECTIVE THROTTLE POSITIONING SENSORS (TPS) AND THAT YAMAHA HAS NOT RECOGNIZED THE PROBLEM. I BELIEVE IT TO BE A VERY SERIOUS SAFETY ISSUE. SOONER OR LATER, SOMEONE IS GOING TO GET RUN OVER BECAUSE OF THIS DEFECTIVE SENSOR. NM Look up ODI 10132562 at NHTSA ↗ ODI 10137517 · 6,500 mi MOTORCYCLE RANDOMLY WILL NOT IDLE AND STALLS BETWEEN SHIFTS. HAS HAPPENED 5 OR 6 TIMES. DEALER SAYS DESCRIBED SYMPTOMS CANNOT NOT BE DIAGNOSED WITHOUT FAULT CODES. FAULT CODES ARE NOT STORED UNLESS CERTAIN "IDIOTIC LIGHTS" COME ON DURING FAILURE. NM Look up ODI 10137517 at NHTSA ↗
Fuel System, Gasoline:Delivery	4,262–6,700 mi	5,000 mi	7	ODI 10118064 · 8,700 mi 1-AVERAGE USAGE, 2-MOTORCYCLES WOULD STALL SPORADICALLY, RPMS WOULD VARY CONSIDERABLY, A LOT OF HESITATION, VARIABLE IDLING, BAD GAS CONSUMPTION. A FAILURE OF THE MOTORCYCLE TO CEASE THROTTLE OPERATIONS THROUGH MID-CORNER DURING A TURN WOULD INEVITABLY CAUSE THE MOTORCYCLE AND ITS RIDER TO LOSE TRACTION AT THE REAR WHEELS. FURTHER CONSEQUENCES WOULD BE DEATH TO THE RIDER IN EXTREME, BUT HIGHLY LIKELY CIRCUMSTANCES. 3-THERE WAS A DEFECTIVE THROTTLE POSITIONING SENSOR WITH THE 2004-2005 YAMAHA FZ6 MOTORCYCLES. YAMAHA HAS SO FAR FAILED TO AN… Look up ODI 10118064 at NHTSA ↗ ODI 10122558 · 6,000 mi THROTTLE "JUMPS" UNEXPECTEDLY DURING NORMAL OPERATIONS OF THE MOTORCYCLE. WHEN TRAVELING SPEED WILL DECREASE AND THE ENGINE WILL "SPUTTER", THEN THE ENGINE WILL JUMP BACK TO SPEED CAUSING A JOLT FORWARD. SYMPOTMS BEST DESCRIBED AND THE FUEL BEING CUT OFF THEN ON AGAIN. Look up ODI 10122558 at NHTSA ↗ ODI 10129651 · 5,000 mi IN SEPTEMBER OF 2004 AT APPROXIMATELY 5000 MILES, THE MOTORCYCLE BEGAN IDLING POORLY AND STALLING. HAD TO TURN OFF THE KEY AND THEN BACK ON BEFORE IT WOULD START AGAIN. YAMAHA REPLACED THE THROTTLE POSITION SENSOR AFTER BRINGING IT TO THEM TWICE WHICH CORRECTED THE PROBLEM. I HAVE ALMOST 13000 MILES ON IT NOW AND IT IS DOING THE SAME THING AGAIN. IT IS A SAFETY ISSUE BECAUSE IT IS DISTRACTING AND HINDERS MY ABILITY TO WATCH TRAFFIC AND FREQUENTLY STALLS AT TRAFFIC LIGHTS. Look up ODI 10129651 at NHTSA ↗
Engine And Engine Cooling:Engine	Too few reports for a range	1,200 mi	3 (sparse)	ODI 10161468 · 300 mi MOTORCYCLE SHUTS OFF AFTER REDUCING THROTTLE DURING DECELERATION AND DURING SHIFTING. MANY RIDERS OF THE SAME MODEL MOTORCYCLE HAVE REPORTED THE SAME PROBLEM. THIS IS DANGEROUS BECAUSE THE BIKE IS W/O POWER AND SOMETIMES DURING DOWNSHIFTING THE REAR TIRE LOSES TRACTION AND CAUSES THE BIKE TO SLIDE SIDEWAYS. NM Look up ODI 10161468 at NHTSA ↗ ODI 10138672 · 1,200 mi DT: THE CALLER SAID THAT WHILE HE RIDING THE ENGINE ON MOTORCYCLE BROKE OPEN AND ALL THE FLUID SPRAYED OUT. THE CALLER WAS GOING ABOUT 60 MPH. HE ALMOST LOST CONTROL ,BUT WAS ABLE TO STOP AND GET OFF THE MOTORCYCLE. HE HAD TO HAVE IT TOWED. DEALER , WHOSAID THEY WILL LOOK AT IT. THE CALLER CONTACTED THE MANUFACTURER AND LEFT A VOICE MAIL. MOTORCYCLE IS A YAMAHA R-1. AK Look up ODI 10138672 at NHTSA ↗ ODI 10260324 · 5,225 mi ENGINE OIL PAN CRACKED AFTER TORQUING DRAIN PLUG TO MANUFACTURERS SPEC. HAVE READ MANY OTHER COMPLAINTS OF THIS SAME OCCURRENCE. CONTACTED LOCAL DEALER AND YAMAHA AMERICA. BOTH DECLINED KNOWLEDGE OF DEFECT. YAMAHA AMERICA WAS QUITE SHORT, DID NOT WANT TO HEAR ANY DETAILS OF THE FAILURE, JUST STATED THAT THERE WERE NO RECALLS, ANY DEFECTS WERE NO LONGER UNDER WARRANTY. *TR Look up ODI 10260324 at NHTSA ↗
Engine And Engine Cooling	Too few reports for a range	100 mi	3 (sparse)	ODI 10125688 · 100 mi DT: LOOSE BOLTS ALL OVER THE MOTORCYCLE NOT FROM THE DEALERSHIP, BUT FROM FACTORY. ALSO, FRONT DISC BRAKE JUNCTION BOX FELL OFF/ CASING MOTOR BOLTS WERE LOOSE, AND TAIL LIGHT WAS ABOUT TO FALL OFF. THIS MOTORCYCLE IS A COUPLE OF MONTHS OLD AND HAS ABOUT 1,000 MILES ON IT. CONSUMER OWNED THREE ROADSTARS, HOWEVER, THIS ONE HAS QUALITY CONTROL PROBLEMS. THE DAY AFTER THE MOTORCYCLE WAS PURCHASED DRIVER HEARD CLANKING NOISES. ROUTING OF CLUTCH CABLE WAS RUBBING AGAINST WINDSHIELD AND CHEWING UP THE CABLE. IN ADDITION, LOWER ROUTING, THE R… Look up ODI 10125688 at NHTSA ↗ ODI 10132944 · 2 mi 1) EXHAUST PIPE TURNS RED AFTER NORMAL USE, GAS TANK VENT LINE IS ABOVE EXHAUST PIPE, BACK FIRES 2) FIRE HAZARD 3) TAKEN TO SHOP AND YAMAHA COULD NOT RECREATE PROBLEM AND I WAS CHARGED FOR DIAGNOSIS - THE PROBLEM STILL EXISTS YAMAHA DOES NOT ACKNOWLEDGE THAT THEIR IS A PROBLEM WITH THIS ATV - THEY COULD NOT RECREATE THE PROBLEM AND THEREFORE ASSUME IT DOES NOT EXIST, THIS ATV HAS DONE THIS SINCE I BROUGHT IT HOME NEW FROM THE DEALER. THE RISK OF FIRE OR EXPLODING IS HIGH SINCE THE EXHAUST PIPE IS VERY NEAR THE FUEL VENT. NM Look up ODI 10132944 at NHTSA ↗ ODI 10157605 · 4,800 mi I AM AWARE OF SEVERAL DOZEN PEOPLE WHO HAVE HAD THE SAME PROBLEM I AM NOW HAVING WITH FAILURE OF THE THROTTLE POSITION SENSOR (TPS) ON A 2004-2005 YAMAHA FZ6. THIS CAUSES A NEW VEHICLE TO RUN POORLY AND STALL FREQUENTLY UNTIL THE PART IS REPLACED. JB Look up ODI 10157605 at NHTSA ↗
Electrical System:Ignition	Too few reports for a range	4,000 mi	3 (sparse)	ODI 10169691 · 3,000 mi YAMAHA 2004 FZ6 BIKE RUNS GOOD FOR A WHILE, AND ALL THE SUDDEN THE ENGINE LOSES 90 % OF ITS POWER, I HAVE TO TURN THE KEY OFF, THEN BACK ON TO REGAIN POWER WHILE IN TRAFFIC, ONE TIME THIS HAPPEN I GAVE IT TO MUCH GAS TO GET OUT OF TRAFFIC ,AND I FLIPPED THE BIKE OVER IN THE MIDDLE OF THE STREET. IT WAS MY LUCKY DAY NOBODY RAN OVER ME. LOOKING AT THIS WEB SITE , THERE IS A LOT OF OTHER FZ6 RIDERS WITH THE SAME PROBLEM, I HAVE ASKED 4 YAMAHA DEALERS IF ANYONE ELSE IS HAVING THIS PROBLEM AND THEY ALL SAID NO? WELL THEY SURE DO BY LOOKING ON THI… Look up ODI 10169691 at NHTSA ↗ ODI 10137531 · 7,500 mi THE MOTORCYCLE LOSES IGNITION, AS THOUGH THE "KILL SWITCH" WAS PRESSED. THE RPMS DROP TO ZERO AND THERE IS NO THROTTLE RESPONSE, ALTHOUGH LIGHTS AND GAUGES CONTINUE TO WORK. JB Look up ODI 10137531 at NHTSA ↗ ODI 10168366 · 4,000 mi MY 2005 FZ6 RAN FLAWLESSLY TILL 4000 MILE THEN THE IDLE WAS DROPPING TO 600-800 AND THEN WOULD JUST DIE. I WOULD TURN KEY OFF AND TURN KEY ON AGAIN AND RESTART AND IT WOULD RUN FINE. IT HAPPENS TWICE A WEEK. ONCE ON WET PAVEMENT IT WAS FEELING BOGGISH I PULLED CLUTCH TO SEE AND IT WAS 600-800 AND DIED. I LET OUT CLUTCH AND ALMOST LOST IT. I READ ABOUT SEVERAL OTHER OWNERS EXPERIENCING SAME PROBLEM AND SOME RUMOR IT TO THE TPS SENSOR. JB Look up ODI 10168366 at NHTSA ↗
Fuel System, Other	Too few reports for a range	8,950 mi	3 (sparse)	ODI 10118434 · 2,000 mi IDLE SUDDENLY GETS ROUGH THEN ENGINE QUITS/STALLS AT RANDOM TIMES, MOST OFTEN AT LOW SPEED AFTER DOWNSHIFTING, BUT HAS HAPPENED AT HIGHWAY SPEEDS ON PARKWAY IN TRAFFIC. I'M INVOLVED WITH AN ONLINE USERS GROUP OF FZ6 OWNERS (ABOUT 100-150 IN THE GROUP) AND ABOUT 20 - 25 PEOPLE HAVE HAD TO GET THE THROTTLE POSITION SENSOR (TPS) REPLACED TO CORRECT THE PROBLEM. (WITHIN THE 1ST YEAR OF OWNERSHIP) I BELIEVE MY BIKE IS STARTING TO EXHIBIT SOME OF THE SAME CHARACTERISTICS THEY ALL HAD AND FEEL YAMAHA SHOULD LOOK INTO THIS FOR A RECALL BEFORE SO… Look up ODI 10118434 at NHTSA ↗ ODI 10118605 · 8,950 mi THROTTLE POSITION SENSOR ISSUE WELL DOCUMENTED ON HTTP://FORUMS.SPORTBIKES.NET/FORUMS...088#POST1774088 STALLING ON FREEWAY, COULD CAUSE ACCIDENT. HAS NOT BEEN FIXED BY YAMAHA. Look up ODI 10118605 at NHTSA ↗ ODI 10120825 · 13,799 mi 2004 YAMAHA FZ6 13K+ MILES. DURING A SUSTAINED CRUISE, WITH A SUSTAINED RPM BETWEEN 4K AND 5K RPM, THE ENGINE BEGAN FALTERING/BOGGING DOWN AND RUNNING VERY ROUGH. ACCOMPANYING THIS ISSUE, THERE IS A MARKED SENSE OF DECELERATION UNLESS MORE THROTTLE IS APPLIED TO COMPENSATE FOR THE THE LOSS OF POWER; THE DECELERATION, AT TIMES, CAN BE QUITE SUDDEN. THIS PROBLEM TENDS TO OCCUR BEYOND 1/2 HOUR OF OPERATION. IF DOWNSHIFTING OR UPSHIFTING IS PERFORMED DURING THE ENGINE FALTERING, THE RESULT IS A STALLED OUT ENGINE UNLESS SHIFTING IS PERFORMED VERY Q… Look up ODI 10120825 at NHTSA ↗

Complaint and recall timeline

Explore monthly filing activity alongside recall announcements. Up to ten years of monthly history is available.

ComponentPeriod

Solid line: filed complaints. Dashed amber lines: recall announcement dates for this vehicle selection; markers include all recall components. The latest month is partial. Temporal proximity does not establish causation.

Monthly counts, recall campaigns and complaint examples

Monthly complaint and recall timeline
Month	Campaigns announced	Examples
2024-11	None	No examples available for this selection.
2024-12	None	No examples available for this selection.
2025-01	None	No examples available for this selection.
2025-02	None	No examples available for this selection.
2025-03	None	No examples available for this selection.
2025-04	None	No examples available for this selection.
2025-05	None	No examples available for this selection.
2025-06	None	No examples available for this selection.
2025-07	None	No examples available for this selection.
2025-08	None	No examples available for this selection.
2025-09	None	No examples available for this selection.
2025-10	None	No examples available for this selection.
2025-11	None	No examples available for this selection.
2025-12	None	No examples available for this selection.
2026-01	None	No examples available for this selection.
2026-02	None	No examples available for this selection.
2026-03	None	No examples available for this selection.
2026-04	None	No examples available for this selection.
2026-05	None	No examples available for this selection.
2026-06	None	No examples available for this selection.
2026-07	None	No examples available for this selection.
2026-08	None	No examples available for this selection.
2026-09	None	No examples available for this selection.
2026-10 (partial)	None	No examples available for this selection.

Emerging complaint spikes

Complete months in the latest six months with at least 10 complaints, at least twice the preceding 12-month average, and at least three square-root deviations above that average.

This is a descriptive screening rule, not a statistical defect finding. Publicity and reporting changes can increase submissions.

No complete months meet the spike thresholds for this selection.

Equal-age model-year comparison

Model-wide cumulative reports during the first three or five calendar years, starting with the model year (age 0). Only fully elapsed windows are compared.

Observation windowFirst model yearSecond model year

2005: 12 complaints · 2006: 2 complaints

Equal observation windows
Model year	Through age 0	Through age 1	Through age 2
2005	8	12	12
2006	1	1	2

Date coverage across each selected cohort

Date basis for all complaints in selected model years
Year	Incident dates used	Filing date fallbacks	Excluded dates
2005	14	0	0
2006	2	0	0

Incident date is preferred when valid and no later than filing; otherwise filing date is used. Model year approximates age. Equal observation time does not adjust for sales, distance driven or reporting delays. One complaint linked to multiple model years can appear in each cohort.

Components reported together

Each cell counts unique complaints naming both components. Open a nonzero cell for examples.

Component co-occurrence matrix
Component	Fuel System, Gasoline:Fuel Injection System	Vehicle Speed Control	Electrical System	Fuel System, Gasoline:Delivery	Engine And Engine Cooling:Engine	Engine And Engine Cooling	Electrical System:Ignition	Fuel System, Other
Fuel System, Gasoline:Fuel Injection System	—	0	0	0	0	0	0	0
Vehicle Speed Control	0	—	2 ODI 10132562 · 4,550 mi BIKE STALLS WHEN CLUTCH IS PULLED IN. RPM'S DROP TO ZERO. WAS ALMOST RUN OVER BY TRAFFIC BEHIND ME WHEN ENGINE STALLS. INJURED MYSELF (FOOT/ANKLE) WHEN TRYING TO PUSH THE BIKE OFF THE ROAD (SO I WOULDN'T BE RUN OVER). I'VE BEEN TOLD BY MANY FZ6 RIDERS THAT MANY OF THE FZ6 BIKES HAVE DEFECTIVE THROTTLE POSITIONING SENSORS (TPS) AND THAT YAMAHA HAS NOT RECOGNIZED THE PROBLEM. I BELIEVE IT TO BE A VERY SERIOUS SAFETY ISSUE. SOONER OR LATER, SOMEONE IS GOING TO GET RUN OVER BECAUSE OF THIS DEFECTIVE SENSOR. *NM Look up ODI 10132562 at NHTSA ↗ ODI 11453978 Hello, i ride this Yamaha FZ-6 motorcycle and I experience poor idling and engine stalls during riding, and last time this nearly led to accident, because the motorcycle slowed down in front of an overpassing automobile. I have bought this bike imported from USA. I am situated in Bulgaria, Europe. I saw there is a recall action about faulty TPS sensor. Kindly requesting any help for replacing this sensor by recall action. Thank you in advance for your kind support. [XXX] INFORMATION Redacted PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5… Look up ODI 11453978 at NHTSA ↗	0	0	1 ODI 10157605 · 4,800 mi I AM AWARE OF SEVERAL DOZEN PEOPLE WHO HAVE HAD THE SAME PROBLEM I AM NOW HAVING WITH FAILURE OF THE THROTTLE POSITION SENSOR (TPS) ON A 2004-2005 YAMAHA FZ6. THIS CAUSES A NEW VEHICLE TO RUN POORLY AND STALL FREQUENTLY UNTIL THE PART IS REPLACED. *JB Look up ODI 10157605 at NHTSA ↗	0	0
Electrical System	0	2 ODI 10132562 · 4,550 mi BIKE STALLS WHEN CLUTCH IS PULLED IN. RPM'S DROP TO ZERO. WAS ALMOST RUN OVER BY TRAFFIC BEHIND ME WHEN ENGINE STALLS. INJURED MYSELF (FOOT/ANKLE) WHEN TRYING TO PUSH THE BIKE OFF THE ROAD (SO I WOULDN'T BE RUN OVER). I'VE BEEN TOLD BY MANY FZ6 RIDERS THAT MANY OF THE FZ6 BIKES HAVE DEFECTIVE THROTTLE POSITIONING SENSORS (TPS) AND THAT YAMAHA HAS NOT RECOGNIZED THE PROBLEM. I BELIEVE IT TO BE A VERY SERIOUS SAFETY ISSUE. SOONER OR LATER, SOMEONE IS GOING TO GET RUN OVER BECAUSE OF THIS DEFECTIVE SENSOR. *NM Look up ODI 10132562 at NHTSA ↗ ODI 11453978 Hello, i ride this Yamaha FZ-6 motorcycle and I experience poor idling and engine stalls during riding, and last time this nearly led to accident, because the motorcycle slowed down in front of an overpassing automobile. I have bought this bike imported from USA. I am situated in Bulgaria, Europe. I saw there is a recall action about faulty TPS sensor. Kindly requesting any help for replacing this sensor by recall action. Thank you in advance for your kind support. [XXX] INFORMATION Redacted PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5… Look up ODI 11453978 at NHTSA ↗	—	0	0	0	0	0
Fuel System, Gasoline:Delivery	0	0	0	—	0	0	0	0
Engine And Engine Cooling:Engine	0	0	0	0	—	0	0	0
Engine And Engine Cooling	0	1 ODI 10157605 · 4,800 mi I AM AWARE OF SEVERAL DOZEN PEOPLE WHO HAVE HAD THE SAME PROBLEM I AM NOW HAVING WITH FAILURE OF THE THROTTLE POSITION SENSOR (TPS) ON A 2004-2005 YAMAHA FZ6. THIS CAUSES A NEW VEHICLE TO RUN POORLY AND STALL FREQUENTLY UNTIL THE PART IS REPLACED. *JB Look up ODI 10157605 at NHTSA ↗	0	0	0	—	0	0
Electrical System:Ignition	0	0	0	0	0	0	—	0
Fuel System, Other	0	0	0	0	0	0	0	—

Co-reporting does not establish that one component caused another concern.

Recurring narrative patterns

Specific keyword mentions beyond broad component labels. Matching includes negations and comparisons and does not confirm a diagnosis.

Search patterns

3 patterns with matching reports.

Stalling or loss of power

33 mentions · 66.0% of complaints

Median mileage: 7,400 mi (29 usable records).

ODI 10118064 · 8,700 mi

Look up ODI 10118064 at NHTSA ↗

ODI 10118434 · 2,000 mi

Look up ODI 10118434 at NHTSA ↗

ODI 10118576 · 8,000 mi

Look up ODI 10118576 at NHTSA ↗

Matching rule

\b(stall\w*|loss of power|lost power|engine shut\w* off)\b

Fuel smell or leak mentions

1 mentions · 2.0% of complaints

Median mileage: 7,400 mi (1 usable records).

ODI 10135318 · 7,400 mi

TROTTLE CHUNKY/DELAYED/ERRATIC, MAKING MOTORCYCLE DIFFICULT TO CONTROL IN CORNERS. STALLS AT STOPS, A DANGEROUS SITUATION IN CITY TRAFFIC. DOES NOT IDLE, I NEED TO KEEP THE THROTTLE SLIGHTLY ROLLED ON. RUNS ROUGH, SMELLS OF GAS, SEEMS TO MISS. PROBLEMS STARTED WITH THROTTLE DELAY AT 7000 MILES, STALLING STARTED AT 7400 MILES. *JB

Look up ODI 10135318 at NHTSA ↗

Matching rule

\b(fuel leak\w*|gas leak\w*|gas(?:oline)? smell|smell\w* (?:of )?(?:fuel|gas))\b

Hard or delayed shifting

1 mentions · 2.0% of complaints

Median mileage: 100 mi (1 usable records).

ODI 10136746 · 100 mi

1) 2005 YAMAHA YZF R1. NORMAL EVERYDAY RIDING FOR 10,000 MILES. AFTER WORK I WARMED UP MY MOTORCYCLE TO 170 DEG F. 2) WHEN I SLOWED DOWN THE RPM'S DROPPED UNDER 1,000 AND THE MOTORCYCLE STALLS/DIES. IT DIED 3 MORE TIMES BEFORE I COULD GET TO A PLACE TO PULL OVER. AFTER I PULLED OVER I GOT OFF MY MOTORCYCLE AND THEN LET IT IDLE. THE IDLE WAS LOW BUT DID NOT DIE. I THEN RIDE MORE AND IT HAPPENED 1 MORE TIME. I HAD TO REV THE ENGINE TO KEEP IT FROM DYING. I STOPPED AND LET THE BIKE SIT FOR OVER 1 HOUR. AFTER I STARTED IT BACK UP EVERYTHIN…

Look up ODI 10136746 at NHTSA ↗

Matching rule