Intake Backfire

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Mar 13, 2010 | 11:42 PM

Boman6760

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Intake Backfire

Slowly but surely getting this project in shape. Recently added taylor wires, Long tubes and y-pipe minus all emissions. Emissions shut down. New O2's (OEM). MSD coil. Plugs done within last 1000 miles. So now I notice an intake backfire. Always there but more noticeable now that I have other problems ironed out. In park, nuetral, or any quick stab of the pedal it will sometimes do it. Not 100% of the time but more than enough. When I did the coil the ICM had some corrosion around it that concerned me. Could this be a cause? If not what else could I be looking at?

Mar 14, 2010 | 12:56 AM

biggb1783

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Joined: May 2008

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From: philadelphia area

generally intake backfire's are caused by timing issues or fuel puddleing but your's maybe somethng as simple as a vacuum leak?
g/l.

Mar 14, 2010 | 01:02 AM

ddsbadz

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Joined: Mar 2010

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From: upstate ny

i had intake backfires do to cam lobe worn on intake lobes valves not opening and backfiring threw intake (engine builder put wrong springs in my heads to much pressure on cam wore lobes off)