Rough Idle-Rich mixture?
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Rough Idle-Rich mixture?
I have a 1992 F-250 with a 460 CI engine. When starting the engine cold the exhaust smokes a little (black smoke) and there is a rich fuel mixture smell. The engine idles very rough when cold then smooths out after it warms up. Any suggestions what is causing the problem?
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Waltmoe
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Waltmoe
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Joined: Dec 2001
Posts: 166
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From: Lewisville U.S.
Rough Idle-Rich mixture?
my truck was doing the same thing about a week ago and i replaced the o2 sensor which didnt do anything for me except cost me 50 bucks, but i changed the fuel pressure regulator and it fixed it, so good luck to you by the way the fuel pressure regulator is about 30 bucks
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