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Old 04-17-2011, 10:32 PM   #18
cableguy0
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Join Date: Apr 2000
Location: Delta,Pa
Posts: 14,950
Re: SBC 350 Engine Backfire Through Exhaust and Carb

Next step. Pull the valve covers off. Roll the engine over by hand and watch the rockers move. Look for any rockers that arent moving as far as the rest of them. Have you checked fuel pressure by any chance? Get a bottle of zinc additive in that engine asap.
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