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Old 01-04-2012, 07:05 AM
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wont idle

383 runs rough and pops a little out of exhaust and wont stay idling. edelbrock 600 cfm manual choke. msd hei ign. eddie heads and intake. new altenator. in an 84 gmc shortbed. checked timing and is 8 initial and 28 total. more than that it pings. any suggestions. a short maybe? New altenator problem?? Help. Thanks

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Old 01-04-2012, 08:27 AM
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sounds like a vacuum leak. My car did the same thing, mine was leaking between the carb and intake, had the wrong gasket .
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Old 01-04-2012, 08:56 AM
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test=?

Try a compression test - betetr yet a real leakdown test with carb open- se if ther may be a exhaust valve not seating correctly-Thats my guess? should show low or no compression on 1 at least?/
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