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Reply to "My engine strarted popping last night."

Thanks guys I'll update you when I have the time to look into it. I might be able to pull the plugs today. If I check the distributor pin, then I will have to redo the timing right? That will mean pulling the bulkhead.
Here my current list of possibilities.
1) Timing is messed up because of a sheared pin.
2) Spark plugs are fouled. (missing and backfiring)
3) Lean or Rich (check plugs) I will post a photo
MSD box is bad or badly wired.

I had to drive about 3 miles home, and it ran alright. I accelerated in 3rd at a reasonable rate. It had been popping a bit at idle, but as I drove it seemed to improve. That was an hour after I tried to go for a spin and wanted to accelerate hard and it was bad.
Last edited by icole
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