I little history, bought it 5 years ago, drove it home..ran great...fire it up from time to time, while sitting, ran fine. 5 years later, have dropped 7 grand into making it a daily driver/Oregon backwoods wheeler. Have changed fuel lines, filter, new cap, rotor plugs and wires. Would turn over, but no spark. Replaced coil..nothing...did more troubling shooting..diagnosed as pick up coil, in stalled it, has spark, but still won't fire up. Find out, that probably while sitting at ex wife's house, someone messed with pick up coil, as well as moving distributor 20 degrees off. Corrected all set cylinder to one, distributor to one belt to one...everything in line...turn it over and when we checked timing, on two different guns. Where it should have been on one..was on the opposite side..pulley is I suspected and good. Other info...has a webber 380 on it, when turning over it is back firing out of the carb, which I take as being out of time. Any onsite or ideas would be great appreciated...



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Duplicate Thread

See: https://www.yotatech.com/forums/f114...ing-up-308687/

 

If it were mine, I'd pull the distributor out, confirm TDC compression stroke on #1, reinstall distributor on #1 after thorough inspection, and then recheck your air-gap on your pick-up. Your either running too low on your ignition timing or you're on the exhaust stroke.

If that still doesn't solve the problem pull a plug and visually inspect your spark. Make sure it's strong and blue. Weak and orange could mean your "new" coil is bad. It happens.

Make sure no one stuffed anything up your tail pipe either. If you think someone was messing with the distributor then check everything.

Another thought is your harmonic balancer slipping on the crank? It's weird that someone would mess with the timing and not do something else more detrimental. That's why I say to confirm your #1 is actually on TDC compression and the mark on the pulley is still on "0". Pull the #1 plug and stuff a rag in the spark plug hole. Bump it over until it spits the rag out. Or use your friends finger. Either one will work. But something is off with your timing.

If nothing else, put the timing light down and just keep advancing the distributor until it cranks without back firing through the carburetor. Then see what your timing light says. Your pulley mark could be off.