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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