WebNov 5, 2009 · I am slowly working the bugs out of a new cam and head swap. I am having problems with the motor popping through the exhaust. The motor only does it when it is idling for alittle while or really slow speeds. There is no popping in at wide open throttle. … WebOct 14, 2008 · I have an sbc that was broke in on the dyno about 2weeks later here comes this poppin/backfire out the exhaust i took the whole car back to shop that build the motor. from there we pulled the intake off to check all solid roller lifters where they were all fine,adjust all the rockers over sealed intake and adjusted timing over again changed all …

4: Backfires in Exhaust - Mikuni American Corporation

WebEngine backfires can be produced by: a vacuum leak. bad timing. problems in the ignition system. lean or rich air/fuel mixture. a faulty sensor. an exhaust leak. or some other … WebFeb 16, 2013 · Exhaust Popping on Deceleration. When you decelerate, you reduce the amount of throttle. This causes an overrun, that is, the motor’s rpm is turning faster than the fuel provided can support, so the … outspell instantly

SmallEngineRepairHelp-briggs and stratton popping through exhaust

WebDec 2, 2006 · A Rich condition can backfire (or afterfire) out of the exhaust. The carburetor may be too rich, or you may have a situation where you're plugs have gotten killed. A … WebJan 27, 2013 · Posts: 2,394. Hello; The most common thing for popping in the exhaust is excess air. It 's either too lean and thats the source of the air or there is an air leak in the … WebJul 18, 2011 · 11,400 Posts. #15 · Jul 15, 2011. By all means, get the timing on spec, it`s not going to run right until you do. Next is there could be some crossed spark plug wires, very common occurance. If everything checks out okay and you get the timing in spec and the problem persists, pop the valve covers and fire it up, at idle look for a rocker arm ... raised railroads crossword clue