Quote:
Originally Posted by Monkey Wrench
actually the fuel pump comes on with key on and primes the system anyway. it might help it start a tad quicker. I dont think it's unusual for the pressure to leak down overnight past the check valve.
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as stock a 944 fuel pump does NOT prime at key on.
the fuel pump only turns on when the engine is cranking due to the way the DME/DME relay are wired.
you can get an aftermarket DME relay with a prime function if you want though.