I'm trying to determine is my electric fuel pump is delivering enough pressure. It is a 1985 BMW 318I. The Chiltons/Hayes book indicate the pressure should be ~47psi. The instructions to test the pump is not clear. They imply I should connect the gauge so the gauge is monitoring the pressure but not stopping fuel flow. Use a "T" connector. My question is do I crank the car and check the pressure with the motor running?
My symptoms are the motor idles and revs fine with no load. Loading causes the motor to stumble or miss. I replaced my fuel filter which was almost solidly blocked but the problem is still there. I'm wondering if the clogged filter caused the electric fuel pump to go bad.
Any ideas?
Thanks.... Randy