Chevrolet Repair Questions? Ask a Mechanic for Answers ASAP
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Are you saying it cranks over but does not start?
Are you looking for some possible causes?
Thank you for that information.
What size engine do you have?
YES, the first thing to do is check for spark while cranking and or to see if the engine runs on starting fluid. Checking fuel pressure would be the correct test done by an auto mechanic to determine if the new fuel pump is working or not. You can also check to see if the fuel pressure leaks down after the engine is turned off by watching the fuel pressure gauge to see if it drops down. If so, it could be a leaky fuel pressure regulator leaking fuel into the engine not accounted for by the computer causing this hard/no start condition.
You can use a simple spark tester to check for spark. Just insert it into the spark plug wire and ground it out on the other side. Watch for spark as someone is cranking the engine over.
CLICK HERE for a spark tester
You would hook up a fuel pressure gauge to the fuel rail and crank the engine over while you take a reading.
No problem. There should be a fuel pressure test port on the fuel rail to screw in the fuel pressure gauge. Once you find it, it is really easy to attach the gauge.
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You dont have to.. no.. but I would strongly recommend it.
How else would you know the fuel pump is bad if you dont check the fuel pressure?
Not a problem! :)