Question about Ford F-150

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1995 f150 lightning 351w 5.8l smoking with no load above 4000rpm, does not smoke under heavy load or below 4000rpms. Intake leak/ splash oil? Have not checked vacuum but notice a/c vents close under acceleration.

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  • crcars Aug 09, 2008

    I also have a 95 f\150 that changes from vent to defrost on it's own while on MAX A/C and accelerating/decelerating! It does OK when on normal A/C. I also have high idle and hard shifts on occasion.

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  • Anonymous Mar 13, 2014

    BT50 3.0 CRDI HEAVY HAS BLACK SMOKE. especially under load

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1 quick check, EGR valve failure is common with 5.8, You can clean it sometimes to see that it works and if that solves your trouble, do replace it. They seem to go every 50,000 or so , usually caused by running injector cleaners that get caught in exhaust as nonburnable.

Posted on Jan 14, 2009

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