vehicle signal
U.S. public vehicle records

2004 Yamaha FZ6 problems and owner complaints

Explore the records behind recurring owner reports.

Key facts

34 owner complaints analyzed

0 distinct recall campaigns

6,850 mi median reported failure mileage

Scope: 2004 model year. Data snapshot: . 30 complaints include usable failure mileage.

Owner-reported patterns

Most common problems

Fuel System, Gasoline:Fuel Injection System is the most frequently named component, appearing in 9 of 34 complaints (26.5%). A complaint can name multiple components.

Recurring terms in complaint narratives
TopicMatching reportsShare of complaints
Engine operation2573.5%
Transmission and shifting411.8%
Electrical and battery issues12.9%

Topic matches use published keyword rules. They describe mentions, including negations or comparisons, and do not confirm a diagnosis. Read the matching rules.

Component breakdown

Number of unique complaints naming each component. Top eight shown.

Fuel System, Gasoline:Fuel Injection System
9
Vehicle Speed Control
6
Electrical System
5
Fuel System, Gasoline:Delivery
5
Fuel System, Other
3
Engine And Engine Cooling:Engine
2
Fuel System, Other:Delivery
2
Electrical System:Ignition
1
Component breakdown data
CategoryCount
Fuel System, Gasoline:Fuel Injection System9
Vehicle Speed Control6
Electrical System5
Fuel System, Gasoline:Delivery5
Fuel System, Other3
Engine And Engine Cooling:Engine2
Fuel System, Other:Delivery2
Electrical System:Ignition1

Fuel System, Gasoline:Fuel Injection System: 9; Vehicle Speed Control: 6; Electrical System: 5; Fuel System, Gasoline:Delivery: 5; Fuel System, Other: 3; Engine And Engine Cooling:Engine: 2; Fuel System, Other:Delivery: 2; Electrical System:Ignition: 1

Reported problems by failure mileage

Complaint counts in mileage bands. These are not failure rates per vehicle or mile.

Under 25,000
30
25,000 to 49,999
0
50,000 to 74,999
0
75,000 to 99,999
0
100,000 to 149,999
0
150,000 and above
0
Reported problems by failure mileage data
CategoryCount
Under 25,00030
25,000 to 49,9990
50,000 to 74,9990
75,000 to 99,9990
100,000 to 149,9990
150,000 and above0

Under 25,000: 30; 25,000 to 49,999: 0; 50,000 to 74,999: 0; 75,000 to 99,999: 0; 100,000 to 149,999: 0; 150,000 and above: 0

Under 25,000 miles has the most reports with usable mileage (30). 4 complaints have missing, zero or invalid mileage.

Complaints over time

Year the complaint was filed, not the vehicle model year or incident year. The snapshot year is partial.

2005
25
2006
8
2023
1
Complaints over time data
CategoryCount
200525
20068
20231

2005: 25; 2006: 8; 2023: 1

Pattern summary

Fuel System, Gasoline:Fuel Injection System leads the component reports. Engine operation appears in 25 complaint narratives. Transmission and shifting appears in 4 complaint narratives. Electrical and battery issues appears in 1 complaint narratives. Use these patterns to inspect individual reports and prepare questions for a mechanic.

Calculated from recorded counts. An AI narrative has not been published for this selection.

Complaint evidence

Examples provide context, not a representative sample or a verified diagnosis.

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 10120825 · 2005-05-13 (May 13, 2005)

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…

Owner-reported narrative. 13,799 miles reported. Look up ODI 10120825 at NHTSA ↗

Owner report 10121061 · 2005-05-16 (May 16, 2005)

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 …

Owner-reported narrative. 5,000 miles reported. Look up ODI 10121061 at NHTSA ↗

Owner report 10157688 · 2006-05-16 (May 16, 2006)

AT 9M MILES, MY 2004 YAMAHA FZ6 BEGAN TO EXHIBIT THE FOLLOWING: 1) AFTER APPROXIMATELY 30 MINUTES OF OPERATION, ERRATIC AND PROLONGED PERIODS OF ROUGH IDLE AT 500 RPMS INSTEAD OF THE NORMAL 1300 RPMS 2) MOTOR WOULD STALL DURING GEAR CHANGES, EVEN AT HIGHWAY SPEEDS 3) DURING THESE TIMES, THE SMELL OF GASOLINE WAS NOTICEABLE. CHANGING THE SPARK PLUGS SEEMED TO FIX THE PROBLEM TEMPORARILY, BUT THEY SOON REAPPEARED. AT 12M MILES, THE BIKE WAS TAKEN TO THE YAMAHA DEALER TO BE FIXED BUT THEY COULD FIND NOTHING WRONG WITH IT. I WENT NEXT TO AN …

Owner-reported narrative. 12,800 miles reported. Look up ODI 10157688 at NHTSA ↗