03 ltz 400 - Suzuki Z400 Forum : Z400 Forums
 
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post #1 of 4 (permalink) Old 04-04-2019, 05:20 PM Thread Starter
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03 ltz 400

My quad stopped running, holding the plug to metal it only sparks the first time you hit the start button then nothing after that until u turn the ignition off and back on then it only sparks once. I put a new plug and wire on, and relay, bad cdi box?
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post #2 of 4 (permalink) Old 04-05-2019, 02:25 PM
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Possibly. Check the connectors on the CDI for being loose. Then disconnect them and look for burned or loose pins in the connectors themselves, obvious harness damage, loose grounds, etc. Also make sure the boot on your spark plug wire is all the way on and the plug is making good contact with the wire, maybe even trim a little off the end of the wire to get a fresh end on it in case itís corroded.

You can also check the resistance of the coil, both primary and secondary. Limits are in the manual and if itís very far out of spec, itís probably bad.

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94mm bbk, +4 stroker, Hot Cams, Vertex piston, FMF Power Bomb header and Power Core can, KW black diamond valves/dual springs, FCR39, K&N, Elka long-travel LT fronts and rear, Houser +3, +3/4 LT A-arms, American Star pro xs chromoly tie rods, Dyna non-programable, Tusk +3 axle.
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post #3 of 4 (permalink) Old 04-20-2019, 09:31 PM
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I have a oem CDI for a 03 if u you need one
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post #4 of 4 (permalink) Old 04-27-2019, 11:08 AM
CFM
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I thing about every time I've encountered this symptom over the years, it has almost always been a bad CDI.
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