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back fire buick v6 1978 even fire

Old 08-05-2018, 02:24 PM
Junior Member
Thread Starter
Join Date: Aug 2018
Posts: 1
Default back fire buick v6 1978 even fire

Hello, iam from the Netherlands and i have trouble with an buick v6 3.8l engine. The engine strats great but you can hear an misfire. when you give more ga he wil back fire out of the carburator. this problem is not related to one cilinder.

I hope some one gots the answer.
Old 08-10-2018, 05:22 AM
Senior Member
Join Date: Sep 2010
Posts: 811

It sounds like the spark is getting to the cylinder too early and firing the mixture too soon.`
That could involve the position of the distributor as far as timing is concerned.
Another thing could be spark plug wires and how they are placed and routed.
How about you tell us everything from the time it first started and what you did if anything?
Can you see any carbon tracks inside the distributor cap ?
When were the plugs and timing last serviced?
If the carburetor accelerator pump is not working correctly the engine will not respond as it should.
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