popping from exhaust when boosting, what could it be?
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Joined: Oct 2001
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popping from exhaust when boosting, what could it be?
Very low boost is fine. Once I start to go over 6psi, I get nothing but popping from the exhaust. A/F ratio is fine at 11.5-13.0. The only thing I can think of are the plugs which are stock heat range. I just ordered a set of autolite 103's. DO you guys think that will solve my problem?
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Joined: Apr 1999
Posts: 1,178
From: Cleveland, WI
Re: popping from exhaust when boosting, what could it be?
I've run Autolight 103's gapped at .035 for the last few years and haven't had any ignition problems. I also run a MSD 6 igntion though. If I run on the stock ignition it will blow out the spark, and I loose quite a bit of power, but it does not pop.
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Joined: Jan 1999
Posts: 839
From: Minnesota
Re: popping from exhaust when boosting, what could it be?
Make sure your valve springs are strong enough. Also check to see if one is broken. I have 3 coils in each spring. Had a similar problem when I busted a coil.
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