Posted by RTR on December 19, 2023 at 04:54:15 from (174.229.30.112):
We have a caterpillar forklift with a 4-cylinder overhead valve engine that looks just like a Ford 601 tractor engine, but runs on propane. It has a Prestolite distributor with electronic ignition. Been trying to get it to Run since we bought it, and I have used a spark tester with an adjustable gap. I can get spark to the spark plugs With a 1/16 inch gap the spark is very thin, and sometimes sparks to the edge of my tester electrode. If I move my tester gap to 1/4", I get no spark on any of the Plugs. It has a brand new ignition Cole, MSD half output 45,000 Volt coil. Has resistor type plug wires.
Could the EI module be bad? Why would that spark be so thin and weak? I thought it was supposed to jump a quarter inch gap and be hotter than that. Anything else in distributor like rust cause this? This is my first troubleshooting with electronic ignition.
This post was edited by RTR on 12/19/2023 at 04:56 am.
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