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GMC Yukon Repair Question


Topics covered: Black smoke, Engine, Fuel filter.
Mileage: No information provided.

Asked on April 18, 2007

Fuel

1996 GMC Yukon 5.7 2WD, 145,000 miles.

My truck was having a "hard to start when cold" problem, had the fuel pump and fuel filter replaced and that solved the problem but now there's black smoke coming out from the exaust and the engine misses and sputters alot, codes read MAS sensor, replaced it but no difference. Please help.
Avatar Asked by mwkapone

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