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The easiest way to test your fuel pump, is to disconnect the fuel line going to the fuel filter (if you have a turbo it should be located in the engine bay). FUEL IS FLAMABLE, DO TEST AT YOUR OWN RISK.
You will need a friend!
1.) Disconnect hose to fuel filter.
2.) Get a 2 liter Soda jug.
3.) place hose into jug.
4.) have your friend hot wire the pumps using a bypass wire at the fuel pump relay.
That 2 liter jug should fill up within seconds, if it doesn't than you have a bad pump. But you could also have bad pressure, but I'm assuming you don't have a pressure tester. Stop test before jug fills!
You can test the intank pump the same way, except you will want to disconnect power to the main pump first. Also disconnect the fuel line going to the main pump, if any fuel comes out of the fuel line going to the main pump than intank pump is working.
My experience so far says you have a good pump. As mentioned earlier about your intake pump, that could be part of the problem, but if you have a full tank of gas you are probably fine. If the car was sitting for a while, you should have the tank drained and cleaned. If you continue to run the car on bad gas, you will burn out your pumps.
I personally would clean the throttle body (easy to do) and replace fuel injector seals (these can be difficult/fustrating). If the car starts but runs at a low idle, try these first. Also check vacum hoses.
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