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Ignition diagnostic help! Electrical resistance specs needed

Posted: September 1st, 2011, 11:53 am
by MX500
I have a 1987 CR500, I thought I fried it from running a bit lean, turns out it has 145PSI compression which should be enough to run. It actually has no spark. The bike would go from running great when warm, to cutting out when it got hot. Now it doesn't even spark when its cold.

I need the resistances of the coil, stator, "hall effect sensor lookin ass thing", and other ignition parts likely to cause the issue. I tried to find a free FSM online but had no success. Any help will be greatly appreciated.

Posted: September 1st, 2011, 12:12 pm
by Kuma
I would try to locate a local hoon and try swapping out parts, starting with the coil.

Posted: September 1st, 2011, 12:48 pm
by coley13
mine did exact same thing just the other day. Turned out to be the coil. Resistance values where the same so wasnt giving me a diagnosis..

Not sure on 87.

Mine was

.6 ohms primary winding
18 ohms secondary winding "with cap"

Posted: September 2nd, 2011, 9:44 am
by MX500
I got some readings, the kill switch is functioning properly, but I forgot to check for a short to ground :x

The little black sensor (forgot the name, sorry.) has 124 ohms read between green/white and blue/yellow wires; on the ignition box side of the of these wires I read an open curcuit.

I read 23 ohms resistance between the blue and white wires going to the stator, on the ignition box side of that connection I read 29,000 ohms resistance.

Posted: September 5th, 2011, 8:31 am
by MX500
Fck it. The bike is sitting in pieces until I get my OTHER ignition problem fixed. Ever since swapping in my GM AIDS (HEI) module, my 240Z runs on four cylinders below 7000rpm