 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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#1
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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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| Jack Standz |
Sep 1 2026, 04:41 PM
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#2
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Senior Member Group: Members Posts: 912 Joined: 15-November 19 From: Happy Place (& surrounding area) Member No.: 23,644 Region Association: None 
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There is a decel (deceleration) valve that allows extra air into the motor for emissions and to suppress backfiring on deceleration. Suggest testing this as part of your troubleshooting process.
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Posts in this topic
jeff dodge exaust popping with deceleration Sep 1 2026, 02:07 PM
Shivers
My 1.8 fuel injected only pops when deceleration.... Sep 1 2026, 03:19 PM
jeff dodge
My 1.8 fuel injected only pops when deceleration... Sep 1 2026, 03:37 PM orthobiz My 1.8 does this also. As best I can tell it's... Sep 1 2026, 03:51 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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