exhaust popping on deceleration

1950 - 1952, M38, questions, discussions, regarding anything related to the M38.
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chesty
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exhaust popping on deceleration

Post by chesty » Fri May 25, 2018 3:12 pm

My 52 m38a1 engine pops on deceleration especially if I down shift. This condition I vaguely recall from 57 chevy days was a timing or rich fuel mixture in exhaust.. Any help to refresh my memory or steer me is appreciated....Thanx Tony
SGT USMC 1967
1952 M38A1
1967 M416


Cal.Bar
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Re: exhaust popping on deceleration

Post by Cal.Bar » Fri May 25, 2018 4:33 pm

FWIW, my CJ2A was doing that. Cause was an exhaust leak. Check your exhaust manifold and even your muffler pipe connection to the exhaust manifold.

bazookajoe
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Re: exhaust popping on deceleration

Post by bazookajoe » Mon May 28, 2018 4:18 am

My friend had the same problem....float level too high...after adjustment,no popping anymore.


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