Truck runs but no fuel pump sound
#1
Truck runs but no fuel pump sound
89 w150 w/318. When the key is moved to ON position there is no sound at all from the fuel pump to indicate it's priming. Truck cranks and fires right up sometimes, other times it will crank for 5 seconds or more before starting. Sometimes it will start then stall. It always fires up and stays running after it does stall. Any thoughts why?
#2
Mopar Fanatic
I'm thinking it's not a fuel pump problem. Many pumps will become quiet once pressurized. Take a reading on what the fuel pump pressure is. You didn't mention tune-up. Are the plugs correct and newer? I've mentioned in the past that our shop was very strict on not using AC plugs at our dealership. I saw firsthand the problems AC plugs created.
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09-23-2010 12:19 PM