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kawasaki zx7r 1996


Guest james broadbent
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hi, I am doing up my zx7r , after being left for a couple of months I have gone to fire her up after putting fresh fuel in. she starts up with chock on full but only on three cylinders, I left bike to run up to temp and fan kicks in fine but still only on three and when u nock chock off it dies, what could be the problem and how do I fix it cheaply.

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Welcome to TMBF mate.......pop over to the Newbies section and introduce yourself to the guys when you can...... 8-)


Sounds like a plug/HT lead problem to me.......check the plugs and leads. There's a few with ZX7R's on here....so I'm sure they will be able to give you some more specific advice when they're around...... 8-)

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I would whip the plug out and have a look at it if it's soaked on fuel then you are getting fuel to it


If it's bone dry it could be a stuck float or blocked jet in the carb


If it's wet with fuel you need to dry it out then check for a spark if no spark then check all the leads and wiring


Not sure of the are 2 or 4 coils on these if it's 2 then it won't be a coil problem as the other plug that's connected is working


If it's 4 coils so the coil with another to verify it's working

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  • 2 weeks later...
If plug isn't wet, could be a blocked carb jet? :mrgreen:

:stupid: was going to say look for the dry plug and chances are it will be number one or number 4 numberone due to old fuel blocking up jet or number 4 due to lack of fuel allowing flaky crap off bottom of float bowl to lift from carb being dry due to leaning on side stand for a while

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got a 1996 zx7r put 4 new plugs in bike runs but only on 2 cylinders. when checking down pipes to see if warm the 2 pipesto the right when sat on bike are clap cold. what could it be to fix this so is running on all 4 again? carbs blocked? carb cleaner? or something else? please help

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Check which coil(s) those plugs come from......could be that one of the coils has died.......swap the coils over and see if the problem switches to the other cylinders..... :wink: Other than that, it could be clogged jets or float bowls not filling on the carbs for those 2 cylinders.... :)

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Check which coil(s) those plugs come from......could be that one of the coils has died.......swap the coils over and see if the problem switches to the other cylinders..... :wink: Other than that, it could be clogged jets or float bowls not filling on the carbs for those 2 cylinders.... :)

 

I have checked all for plugs for a good spark be for fitting , all was fine so does this rule out coils

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Yeah....if you've got a good spark at all plugs then the coils should be OK...... 8-) In which case it sounds like a fuelling issue......so the carbs could probably do with a strip, inspect and clean...... :wink:

Just make sure you have compression on those cylinders too.......just pull the plugs out and stick a finger in the plug hole and turn the motor over.....should be enough puff there to blow your finger off the hole.... :wink:

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Check which coil(s) those plugs come from......could be that one of the coils has died.......swap the coils over and see if the problem switches to the other cylinders..... :wink: Other than that, it could be clogged jets or float bowls not filling on the carbs for those 2 cylinders.... :)

 

I have checked all for plugs for a good spark be for fitting , all was fine so does this rule out coils

 

cheers will try some carb cleaner tomorrow

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Check which coil(s) those plugs come from......could be that one of the coils has died.......swap the coils over and see if the problem switches to the other cylinders..... :wink: Other than that, it could be clogged jets or float bowls not filling on the carbs for those 2 cylinders.... :)

 

I have checked all for plugs for a good spark be for fitting , all was fine so does this rule out coils

 

cheers will try some carb cleaner tomorrow

 

tried carb cleaner to day and still no joy, any ideas ?

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If you pull the plugs out from the non-firing cylinders are they wet?......if they are, then it's a sparking/compression issue.....if the plugs are dry then you've still go a problem with the carbs......could be well and truly blocked jets that the carb cleaner can't shift..... :wink:

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