Question about 1997 Pontiac Sunfire

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I have a 1998 sunfire will not start changed the fuel filter started right away took it for a spin every thing sounded good after about 15 min shut it off came back in 30 min would not start turned over could here it fire but woud not start and after 10 min of trying it would no longer fire

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The car can only start if it has fuel and fire. Obviously your car can not start because of the the fuel. That was why the new fuel filter made it work right away. What happened next was the fuel pump was not working, or the injector module was not working.
Why wasn't it happening before, just happened now. Well, it was just a coincidence. Things can be wrong at a wrong time.
If you could test the fuel pump by breaking the connector from the fuel line to the fuel distributor to catch some fuel while have a helper to crank up the engine. This could check the fuel delivery meeting spec or not ( by measure the quantity for how long the fuel pump on example 30 sec). If the pump turns but too weak, it could not maintain enough pressure in line for the fuel distributor to work.
The next thing to check is to make sure the injector module working so it can deliver signal to fuel injectors. If it is not delivering signals to injectors then fuel injectors are not opening hence no fuel going into the cylinder for combustion. Good luck.

Posted on Aug 19, 2010


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