This is a discussion on Startup Noise within the Camaro / SS forums, part of the Vehicle Specific category; When i start up my car, about 75 % of the time a loud pop comes from the exhaust. This ...
12-04-2005, 11:20 AM #1
When i start up my car, about 75 % of the time a loud pop comes from the exhaust. This only happens at start up, i have no SES codes, i had a flowmaster 40 series muffler installed, but i have no futher exhaust mods
what could be causing this pop?
Last edited by ss~zoso~ss; 12-04-2005 at 11:23 AM.98' SS Convertible Camaro-76k-Build # 1471, Cragar SS rims, RK SFC's, MAC Panhard, LSX Tune, Shaner S3,
SLP:short thro,Strut tower brace,fan switch
MTI Power induction kit,40 Series muffler,Pacesetter LT's + ORY,12 CD changer,3800lbs
12-04-2005, 04:32 PM #2sonnyredGuest
Sounds like raw gas igniting in the exhaust system .Mine does it if i goose it when its cold but ok after a half minute warm up.
12-04-2005, 04:39 PM #3
it only happens once, just one pop, like a pocket of air in the exhaust or something, it boggels my mind, it doesnt smoke or anything
12-07-2005, 01:45 PM #4
12-07-2005, 04:22 PM #5sonnyredGuest
Unburned gas--backfire --once only, same as mine and a hundred other guys. sometimes its pop-pop-pop-only when its cold.
12-07-2005, 04:47 PM #6
what causes the unburned gas to get into the exhaust
12-07-2005, 06:06 PM #7sonnyredGuestOriginally Posted by ss~zoso~ss
The car is cold the gas is set rich on start up --pop
12-07-2005, 06:09 PM #8sonnyredGuest
That just my experience.
12-08-2005, 01:08 PM #9
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