Question about 2003 Chevrolet Blazer
I have a 2000 Chevy Blazer with a 4.2. It has 109,000 miles on it. Recent tuneup (plugs wires cap rotor, TB cleaned). When is it cold outside, it turns over and acts like it wants to start and run, but dies. The colder it is the worse it is. It will start (or has so far) but someitmes it takes 7-10 times of hitting the key, then it starts. After that it is good for the day, no more problems, till it sets overnight. Other than this problem, the truck runs fine.
This is caused by the fuel pump pressure check valve, when this valve fails the gas drains out of the lines and filter and back to the fuel tank, then when u start the pump has to pump the fuel through the lines and filter and then the air has to be purged out of the system by the injectors, this all takes time, result long crank times and numerous start stall. The pressure check valve is part of the fuel pump, the pump is in the fuel tank.
Posted on Dec 15, 2008
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Posted on Jan 02, 2017
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