 exaust popping with deceleration, Car runs strong with no missfires under acceleration |
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| jeff dodge |
 Sep 1 2026, 02:07 PM
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Newbie  Group: Members Posts: 36 Joined: 5-September 24 From: middleton,WI Member No.: 28,332 Region Association: None  |
My 1.8 fuel injected only pops when deceleration. Any ideas ? Thanks, Jeff
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| Shivers |
Sep 1 2026, 03:19 PM
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Senior Member Group: Members Posts: 3,567 Joined: 19-October 20 From: La Quinta, CA Member No.: 24,781 Region Association: Southern California |
QUOTE(jeff dodge @ Sep 1 2026, 01:07 PM)  My 1.8 fuel injected only pops when deceleration. Any ideas ? Thanks, Jeff Might be an exhaust leak. I had one at the head, the copper gasket was leaking and it made all sorts of racket at decel. |
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| jeff dodge |
Sep 1 2026, 03:37 PM
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Newbie Group: Members Posts: 36 Joined: 5-September 24 From: middleton,WI Member No.: 28,332 Region Association: None |
QUOTE(Shivers @ Sep 1 2026, 04:19 PM) QUOTE(jeff dodge @ Sep 1 2026, 01:07 PM) My 1.8 fuel injected only pops when deceleration. Any ideas ? Thanks, Jeff Might be an exhaust leak. I had one at the head, the copper gasket was leaking and it made all sorts of racket at decel. I think that you might be right. I asked one other Porsche mechanic and he thought this was the most obvious culprit. Thanks, Jeff |
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Posts in this topic
jeff dodge exaust popping with deceleration Sep 1 2026, 02:07 PM
orthobiz My 1.8 does this also. As best I can tell it's... Sep 1 2026, 03:51 PM Jack Standz There is a decel (deceleration) valve that allows ... Sep 1 2026, 04:41 PM wonkipop likely unburnt fuel popping in the muffler.
my 1.... Sep 1 2026, 04:47 PM
brant Agreed
Most common cause of popping
Anneal the g... Sep 1 2026, 04:49 PM |
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