Question about 2001 kawasaki ZZR 250

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No power i am working on a mates kawazaki zzr250, and for some reason it wont idle properly and has no power when riding, can anybody give me an idea on what it might be

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  • Anonymous May 18, 2009

    hi i had same problem check the carb diaphrams for leaks as this messes up the the power band and idle

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Hi ...... Wet your finger and see if the downpipes are warm/hot then try swapping the spark plugs from cylinder to cylinder. This will isolate bad plug or blocked carb ........... Let us know how you get on.

Posted on Dec 22, 2008

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1 Answer

When choke is off wont idle


Hi, Anonymous and the usual suspects are:
1. Fuel cap or fuel tank is not venting properly.
2. Fuel filter clogged.
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4. Float needle and seat sticking.
5. Float level too low.
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7. Idle adjusting screw set too low.
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1 Answer

Die on sidestand


Hi and welcome to FixYa,

To your query, no, the ZZR250 should continue to idle. If the engine dies while idling, it indicates that the engine has starved for fuel which then could be caused by:
  • clogged / blocked idle jets;
  • too much air (air filter removed or replaced with open / free breathers such as those by K & N);
  • too little vacuum on the intake manifold hence the petc0ck closes and fuel is not allowed to flow to the carbs. Try setting petcock to PRI;
  • carbs are not in balance/sync.

Solution would require carb pulldown, checking / cleaning. Completely dis-assemble and soak non-rubber parts in carb cleaner. The idea is to descale / remove the varnish like film coating that would have developed. This would also ensure that the idle jets are not clogged. Note how many turns the air idle mix (pilot) screw is set to.

Good luck and thank you for asking FixYa. Happy Holidays.

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1 Answer

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