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  1. #1

    Default I give up please help

    I have a 2007 Fz1 and it sputters at low rpm's only when completely warmed up, then under about 2500-3000 it runs bad occasionally dying and turns over about four seconds before starting. I've changed the coils and the plugs, waste of money cause I didn't help. My bike has 57.000 miles on it. Any ideas?

  2. #2

    Default

    Have you ever checked the valves?


    Sent from my iPhone using Tapatalk
    Holeshot performance AIS removal kit, stage 2 carb kit, steering stabilizer. 12oclock labs speedo healer. Pipewerx slip on. R6 shock mod. R1 shift mod. EBC clutch springs. +2 rear sprocket. Renthal straight bars.

  3. #3

    Default

    No I have not

  4. #4

    Default

    Think that could be what's causing my issue?

  5. #5

    Default

    Considering it happens when it’s warmed up it wouldn’t be surprising. At that mileage you should have had two checks/adjustments done by now


    Sent from my iPhone using Tapatalk
    Holeshot performance AIS removal kit, stage 2 carb kit, steering stabilizer. 12oclock labs speedo healer. Pipewerx slip on. R6 shock mod. R1 shift mod. EBC clutch springs. +2 rear sprocket. Renthal straight bars.

  6. #6

    Default

    I'll have them adjusted since I need to anyway. Thanks for the advise.

  7. #7

    Default

    Maybe time to sync your throttle bodies as well. As your bike warms up the sensors change and so will your fuel injection timing and fuel delivery. Having 4 carbs pulling at different levels can cause sputtering as well if they're off by a lot.

  8. #8

    Default

    Yep, sounds like tune up time.


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  9. #9

    Default

    did you replace the coils with new or used ones? is it every cylinder or just specific ones? you gotta do some more diagnosing before throwing parts at it. take a video and upload it.

  10. #10

    Default

    Try a can of Techron. Iv'e used it for numerous vehicles and it's always smoothed things out for me. Will clean your injectors.

 

 

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