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Another no start issue

Posted: Wed Jul 29, 2026 5:49 pm
by dsw99a
Hello folks, hoping someone can point me toward a solution for a no start issue.

Car started as a stock 1978 U.S. 530i. I have since swapped in a m30b34 engine still using Jetronic and also put in a 5spd.

Everything went well got it running, got it re-registered and saftied, started acting up on the way home. Kept running albeit hard starts, which eventually lead to no start. Ive done loads in the meantime thinking i would get it taken care of.

So, im getting fuel (added inline pressure gauge) and ive verified spark (inliine spark tester). Ive reset timing a couple times. Still nothing. Im not getting a cough a backfire or anything but a nice healthy spin of the starter. ive pushed fuel into the intake-nothing. i just installed new wires have new plugs yet to be installed.

Stumped. help

Re: Another no start issue

Posted: Tue Aug 04, 2026 9:23 pm
by dsw99a
bump.

e12Looking for advice.

What are the next 2 things you would check for if you had fuel and spark and a no start on 1978 e12 530i?