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73-87chevytrucks.com
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73-87 Chevy _ GMC Trucks
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Black Smoke?
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Topic: Black Smoke? (Read 2294 times)
197
Newbie
Posts: 99
Black Smoke?
«
on:
November 14, 2006, 04:47:00 PM »
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
Logged
'73 C20 454
Blazin
Blazin new trails!
Global Moderator
Senior Member
Posts: 6130
Re: Black Smoke?
«
Reply #1 on:
November 14, 2006, 07:01:00 PM »
Black smoke is a rich condition.
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Some people are like Slinkies. Not really good for anything, but they still bring a smile to your face when you push them down a flight of stairs
197
Newbie
Posts: 99
Black Smoke
«
Reply #2 on:
November 15, 2006, 09:01:00 PM »
Is it running rich harming anything? Cuz its running great!
Logged
'73 C20 454
Blazin
Blazin new trails!
Global Moderator
Senior Member
Posts: 6130
Re: Black Smoke
«
Reply #3 on:
November 15, 2006, 09:23:00 PM »
Poor fuel milage. Foul plugs. carbon buildup.
Logged
Some people are like Slinkies. Not really good for anything, but they still bring a smile to your face when you push them down a flight of stairs
DnStClr
Senior Member
Posts: 1809
Re: Black Smoke
«
Reply #4 on:
November 16, 2006, 11:50:00 AM »
Here's a picture of an exhaust valve that ran rich for too long--
Don St.Clair
Culleoka Tn
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Don
87 Chevy Silverado
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Black Smoke?