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Get a can of throttle body cleaner.....spray throttle body cleaner into the throttle body.....open the blade and shoot some into the throttle body. Then try to start the car...if it starts, then you have a fuel delivery problem. Hook a fuel pressure gauge to the fuel rail and just turn the key on and see what pressure you get. If no pressure then it is either your fuel pump OR a clogged fuel filter. You can then put a new fuel filter on, test the pressure again and if still no pressure, you are pretty much looking at the fuel pump. If you get fuel pressure at the fuel rail and it still won't start then you probably have an injector problem.

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Q: How to determine if fuel pump is working on 1988 Pontiac 6000.?
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