Question about 2001 Chevrolet Silverado 1500
Starts normally cold temperature. Starts normally at normal operating temperature. Let sit for an hour and a half, and try to start motor rolls 15-20 times before starting. Have had pressure regulator replaced in truck. Had gm cetified garage check truck out. Cannot find the problem, starting to get worse.
Dennis, So far you have verified your fuel system is working properly and spark test you performed verifies the ignition system is functioning as it should, you have two of the three needed items finished.
The remaining item to verify will be injector pulse. Without the pulse all the fuel pressure and spark in the world won't allow the engine to start. The reason for this step by step diagnosis is to pin point the system causing the problem.
Then next step will be to purchase or borrow a "noid" light that will tell you if the engine control module is sending the correct pulse to the injectors for fuel delivery to the cylinder.
When the engine is cranking during the "no-start" condition, a good injector pulse will "blink" the light.
Your almost there, good luck and let me know.
Posted on Feb 18, 2009
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Posted on Jan 02, 2017
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