Fuel pump and starting the car
#1
Nordschleife Master
Thread Starter
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If I turn the car's ignition to "on" w/o actually cranking it over, will the fuel pump run and allow me to see if I have a fuel leak at the fuel filter?
I replaced the fuel filter yesterday, all appears to have gone well, but I want to make sure my unions stay nice and dry before starting the car.
I replaced the fuel filter yesterday, all appears to have gone well, but I want to make sure my unions stay nice and dry before starting the car.
#3
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The pump will only run briefly, if you want to run the pump continuously you need to pull the fuel pump relay and jump two of the terminals. I don't remember which terminals off the top of my head.
#5
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If the 964 operates the way the 993 is, it won't. I am pretty much certain it won't. The fuel pump will run only when engine is running or cranking. The DME relay has 2 relays inside. First one is for the DME power itself. Second one is for the fuel pump. Safety thing.
If you want manually run the pump, jump the DME relay. I do it all the times to test the pump and leaks.
If you want manually run the pump, jump the DME relay. I do it all the times to test the pump and leaks.
#6
Burning Brakes
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You need the engine running... you can hear the hydrolic brake system humm when you turn the key to on. It should stop after a little... but the fuel pump should be quiet.
#7
Nordschleife Master
Thread Starter
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Anyone have detailed instructions on how to jump the DME relay?
I never got around to doing it after the fuel filter replacement, but this time I will have replaced all fuel lines and have undone and retightened all the unions throughout the engine compartment, so it's very critical I test for leaks before even thinking about cranking it over.
I never got around to doing it after the fuel filter replacement, but this time I will have replaced all fuel lines and have undone and retightened all the unions throughout the engine compartment, so it's very critical I test for leaks before even thinking about cranking it over.