1990 GMC TRUCK
100,000 MILES
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ANONYMOUS
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Hi I have a 4.3 small truck and the motor races when started I changed the carb base gasket,carb idel up sol,computer temp sender,even blocked the egr valve any ides.
Dec 9, 2012 at 2:43 PM
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HMAC300
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scan for codes and check fuel pressure first. check for a vacuum leak
Dec 9, 2012 at 3:58 PM