Question about 1991 kawasaki ZXR 750

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Zx7 running weird tach flicking up and down

Hello, I am having a problem with my 1991 zx7. Randomly as I'm riding down the road say about 6000 rpms the bike will start sputtering and backfiring and the tach will flick sometimes down and sometimes up and sometimes to zero but it keeps running just not any power. It feels like it is only running on 2 or 3 cylinders. Have torn all into electrical and rebuilt carbs but can't figure it out. Any help would be greatly appreciated.

Posted by Anonymous on

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  • kawasaki Master
  • 75,797 Answers

Sounds like an engine misfire, most likely due to a spark plug connector insulator leaking to the cylinder head.

Posted on Jun 27, 2017

6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

  • 28 Answers

SOURCE: carburator

yes your correct that the problem take it to your mechanic and allow them to adjust it for you your carb needs to be synced.

Posted on Dec 28, 2008

  • 190 Answers

SOURCE: Carb on 2005 kawasaki Bayou 250

remover all plastic/ rubber parts
then soak the whole carb body and slow jet in lacquer thinner

the slow speed jet/needle circuit needs to be cleaned with just 1 strand from 18 gauge copper wire going through all passages an holes pilot circuit in pic2989f1c.jpg

Posted on Apr 01, 2009

  • 1 Answer

SOURCE: can't keep running seems to flood out 1978/79 kawasaki

seems your fuel to air mixture is wrong

Posted on May 13, 2009

  • 8 Answers

SOURCE: bike backfires,dies,restarts runs fine

your carbs are dirty. and probably need to be balanced also... bring the bike bto a garage and have them cleaned by a profesional.... also after market pipes don't give your bike the proper back pressure .. that can mess up your carbs timing

Posted on Dec 12, 2009

  • 330 Answers

SOURCE: I have a 2009 kawasaki klx250s. After starting the

Fuel pump (if you have one) weak or has trash that can move . intermitten short, make sure all fuses are tight not just look good. Probably a re-occuring problem with trash or water in fuel.(fill fuel from clean fuel can ) If it was trash and cleaning carbs made a difference, clean tank filter and lines too.

Posted on Mar 27, 2010

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From what I can determine....it seems you might have a tach going out on your scoot. Clear the code....and go riding. If everything seems normal....then it was a false code, which HD products are notorious for doing....and if not...take it to your local HD house and verify it is your tach.

Probably cost you about !00 for diagnosis and I have no idea on the tach.

Semper Fi,
Z

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Hello, I am having a problem with my 1991 zx7. Randomly as I'm riding down the road say about 6000 rpms the bike will start sputtering and backfiring and the tach will flick sometimes down and...


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