Question about 2002 kawasaki ZZR 400

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From 1 to 4000rpm the bike is ok, but from 4 to 8000rpm the engine seems to loose power and after 8000rpm the power is back. The sparkplug on piston number 4 was black, so i replaced the plugs, start it again and the results was the same. Can the problem be the coil or the pick-ups?

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Check resistance on your plug caps .

Posted on Apr 19, 2009


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Remove both sparkplugs from engine. Plug them back in the sparkplug cables and let them rest on the engine.
Make sure your battery is well charged.
Check for sparks while kick-starting...
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