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73-87 Chevy _ GMC Trucks => Engine/Drivetrain => Topic started by: 197 on November 14, 2006, 04:47:00 PM
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When I floor my 73 with a 454, black smoke will poor out of the exhaust? What is causing this?
And my radiator hose is sometimes sucked in or has extreme pressure. Is that caused by my radiator cap?
Thanks
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Black smoke is a rich condition.
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Is it running rich harming anything? Cuz its running great!
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Poor fuel milage. Foul plugs. carbon buildup.
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Here's a picture of an exhaust valve that ran rich for too long--
Don St.Clair
Culleoka Tn