1988 Chevrolet Cheyenne Repair Question
Topics covered: Gas, Black smoke, Coolant.
Mileage: 80,000 miles.
Mileage: 80,000 miles.
Asked on November 4, 2012
Chevrolet Cheyenne Gas Problem
Why would the truck be running rich?
Puffing out black smoke from exhaust pipe
Puffing out black smoke from exhaust pipe
Asked by afliessAnswer
Replied on November 4, 2012
How long since a tune-up? Any applicable trouble codes? Use a gage and check correct fuel pressure. Also, see if pressure will hold for a bit, with everything off. You may need to block supply and return lines. Check the vacuum line at the pressure regulator, where applicable, for signs of gas. Check the coolant temp sensor.
Replied on November 4, 2012
Just wanted to add, does the crankcase oil smell like gas?