Dale in MD
Cadet
- Joined
- Jul 15, 2010
- Messages
- 12
Went out this am, at first, one of the cylinders would kick in/out at 1/4 throttle or less. Above that, ran great. After several minutes, took 1/2 throttle or better to keep it running on both cylinders. Less than that and again, had a cylinder cut out. Ultimately got to where even full throttle wouldn't keep both cylinders firing.
I've been fighting this a while now. Found plug wires with corroded ends. Replaced them. New plugs. Condensors show increasing resistance and go "open" when check with ohm meter. Two external coils had about 1.5 ohms primary and 13k ohms secondary. Even took hair drier to them to get them hot and still looked Ok - just little increase in resistance. Points are at 0.020" and are clean.
The other day when motor was down to a single cylinder, I tried to narrow down the bad cylinder. I pulled upper plug wire and it kept running. Put it back on and pulled bottom and again, it kept running. Put wire back on and still stayed runnig, but only on single cylinder. Seems like it has enough strength to fire one cyclinder, but not both. The only common ignition component that could affect both cylinders in the coil under the flywheel which feeds both points.
Is there a way to test that internal coil? Has anyone had a similar experience? What did you find?
Thanks,
Dale
I've been fighting this a while now. Found plug wires with corroded ends. Replaced them. New plugs. Condensors show increasing resistance and go "open" when check with ohm meter. Two external coils had about 1.5 ohms primary and 13k ohms secondary. Even took hair drier to them to get them hot and still looked Ok - just little increase in resistance. Points are at 0.020" and are clean.
The other day when motor was down to a single cylinder, I tried to narrow down the bad cylinder. I pulled upper plug wire and it kept running. Put it back on and pulled bottom and again, it kept running. Put wire back on and still stayed runnig, but only on single cylinder. Seems like it has enough strength to fire one cyclinder, but not both. The only common ignition component that could affect both cylinders in the coil under the flywheel which feeds both points.
Is there a way to test that internal coil? Has anyone had a similar experience? What did you find?
Thanks,
Dale