Question about 2003 Chevrolet Cavalier

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Vehicle will not start

The vehicle will not start. it acts as if it's not getting fuel.. i changed the fuel pump but problem still exist. it will turn over but it will catch to start.

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Have your electronic ignition checked on this one.

Posted on Jun 14, 2008

I assume you already checked some of the regular things...check for spark, make sure the timing is at least close to within specs, if these things dont work you might want to look at checking your injectors and see if they are clogged...(high mileage or sitting for a long time would be possible causes)

Posted on Jun 03, 2008

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the only way to tell is to have the fuel pressure tested with a gauge when its running okay then have it tested when its acting up. this will show any type of pressure and volume problem that could indicate a pump problem. when and how long has it been since you changed the fuel filter. pumps will usually act up when they get hot or when you have just filled up on gas. they will also act up when you have driven a bit and shut the engine off to go lets say into a store and come out and try to start it. this is why a fuel pressure test is important.

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Changed fuel pump. still won't start. acts like


You need to start with some basic testing before you change any parts. First check and see if the vehicle has spark on all cylinder, second check fuel pressure on the vehicle with a fuel pressure tester. Does it pass vehicle pressure spec. If not pump or electrical wiring/ connector is faulty. Third if all of the above is good test fuel injectors for pulse with a noid light or test light. Need more info on vehicle make and model engine size and what you have tested so far with findings.
For a quick test you can spray small amount of carb clean down throttle body and see if the vehicle will start and run off from the carb clean, if it does you know you have a fuel related problem. If not you are looking down the wrong path.

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