Join Date: Feb 2005
Location: NC USA
Motorcycle: 92' Gsx-R 750 built from the ground up.
Re: Testing coils
sounds like a sign of lean overheating. my 97' TransAm had a problem once, shop couldn't figure it out for nothing. new plugs, wires. same problem. finally it acted up while they had the car. the mechanic said look under your car. I got down, and glanced under it ,the exhaust headers were glowing red! from a lean mixture which is what the computer read out they thought it was a error with a, O2 sensor. they found the pump was not pumping like it should.
The point I'm making is the lean condition was soo hot it made the headers glow red. I was wondering if I had a burnt piston after that but I never had any trouble. aluminum's melting point is around 1100 degree's F. so its possible if its running lean like that. can you post a pic of what your seeing?
you should also test your ignition pickup coil (under the cover in front of the clutch right side) put your meter on the two wires coming from that (BTW one wire is for the oil sensor don't confuse it) test for ohms there to be good it should read between 150-180 ohms.
Edit: BTW Another spark test is to get a small block of wood, with a hole cut in the middle. drive 2 nails in each end untill they are exactly 5/16"(inch) apart, and run your plug leads to one nail head then a wire to a ground on the bike on the other. If your spark can't jump across a 5/16" gap somethings not right.
Still looking for seventh gear!
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RIP Mike. You are sadly missed
Last edited by SNAKEYES; 07-04-2007 at 10:12 AM.