Coil bad?
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Stage IV
Joined: Jul 2006
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Coil bad?
I tested my coil and the primary should be between 2.5-3.1 ohms. It read 3.4 ohms. My secondary should be between 11,250-13,750 and read 11,100 ohms. Is my coil bad since the ohms are not in between the recommended parameters.My book says to by a new on if not.I'm thinking it's still good. I'm having issues of fouling plugs when my bike worms up then it starts backfiring through carb and exhaust. It runs perfectly with new plugs until it worms up. I just put a super E on it and got it adjusted. Had the problem previously. Hope someone can help. Thanks
Road Captain
Joined: Jul 2006
Posts: 656
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RE: Coil bad?
Your coil is probobly fine. A simple way to see if your getting a strong spark is to pull one plug wire off at a time and stick a screw driver into the plug while holding the rest of the screwdriver against the spark plug tip, start the engine, then with the screwdriver still in the plug cap, pull the body of the screwdriver away from the plug electrode, a strong spark will ussualy be able to arc fairly steady over a 1/2inch gap at idle. Hope I explained that clearly enough. Anyhow I would say it's carb related. Are you sure you not leaving the choke on too long, and not reving the engine with the choke on. For me I start up, and take the choke off within 30 seconds, and sustain with some reving on the throttle till the engine can idle without stalling, and I've always avoided fouling plugs this way. There's also the possibility of simply running too rich. You may also want to confirm the engine timing as well with a timing strobe light. Hope you get it figured out!
Road Captain
Joined: Nov 2005
Posts: 593
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RE: Coil bad?
if i'm not mistaken you can't check the timing with a timing light. its not gonna run when its outta time. the cams have to fit in a certain way and if you don't put them in right then it won't even run. there is no timing adjustment is there?
later,
wanna
later,
wanna
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