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JohnC

1999 Suzuki Quadrunner 500 4WD, misfiring, black smoke

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Suzuki 500 4x4 quadrunner

Quad misfires, black smoke, runs rough. Dies at idle. Checked jets in carb, flooding, found bad needle, replaced it, readjusted float, Replaced o ring gasket at intake, checked boot, checked coil and found weak spark. Any ideas?

Thanks,

John

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Plug boot might not be making good connection with coil wire. Coil could be going bad. There are some direct resistance tests that you can use to test some of the ignition components using a multimeter. If you don't have a service manual, I would get one. It will have the test specs and procedures for your machine.

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