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Old 04-17-2011, 09:10 PM   #13
cableguy0
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Join Date: Apr 2000
Location: Delta,Pa
Posts: 14,950
Re: SBC 350 Engine Backfire Through Exhaust and Carb

Most oil does not. What kind of oil is it? IM not condemning your cam or engine at this point by any means. Just want to make sure you avoid future issues. The first thing you need to start with is a compression check. Low compression can indicate a worn cam. As someone else said. Pull the plugs and make sure they arent black or wet. Also make sure the carb isnt just dumping fuel. Edelbrocks are extremely sensitive to fuel pressure. Anything over 5.5psi will cause them to run rich/flood.
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