 912e mild backfire on deceleration |
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| rosenfe |
 Dec 7 2014, 06:19 PM
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#1
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Senior Member  Group: Members Posts: 564 Joined: 14-October 13 From: northern california Member No.: 16,512 Region Association: None  |
when i accelerate and take foot off gas ,i get backfire sound -or similar to that.its not loud,but noticeable.any ideas of what to check.these cars have backfire valve,but im not sure how that works.car runs strong,just adjusted valves.someone on 912e forum suggested exhaust system gaskets,but im not sure if they were referring to gasket at headers or muffler.any ideas?
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| dknechtly |
Dec 8 2014, 09:29 AM
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#2
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Yellow 914 Group: Members Posts: 71 Joined: 11-April 03 From: Wylie, TX Member No.: 560 Region Association: None |
If you have a two nipple vacuum advance, check that it is good. One of them helps pull back on deceleration.
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Posts in this topic
rosenfe 912e mild backfire on deceleration Dec 7 2014, 06:19 PM
rick 918-S Is it back firing or popping from an exhaust leak? Dec 7 2014, 06:29 PM Mikey914 Exhaust leak Dec 7 2014, 06:30 PM rosenfe well the responses suggest exhaust leak.any sugges... Dec 7 2014, 06:41 PM
pisces914
well the responses suggest exhaust leak.any sugge... Dec 7 2014, 07:01 PM rosenfe more of a popping sound,can i continue to drive it... Dec 7 2014, 06:44 PM patssle Look for carbon blowout - any darkened areas aroun... Dec 7 2014, 07:19 PM roblav1 Yup... exhaust leak. Dec 7 2014, 07:49 PM stownsen914 Or you already have a burned valve (or not seating... Dec 8 2014, 10:45 AM rosenfe noise had gotten louder after adjusting valves.the... Dec 8 2014, 11:53 AM rosenfe would a bad deceleration valve cause this problem? Dec 8 2014, 12:43 PM |
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