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Eric
Eric, Automotive Repair Shop Manager
Category: Porsche
Satisfied Customers: 31935
Experience:  20+ yrs. experience as repair shop manager and technician.
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I have an 86.5 auto trans Porsche 928 that cranks but wont

Customer Question

Hi I have an 86.5 auto trans Porsche 928 that cranks but wont start. I swapped out the fuel pump relay, the LH relay, the fuel pump fuse the ignition relay all still no start. Pulled a spark plug it was bone dry.
now what
Submitted: 1 year ago.
Category: Porsche
Expert:  Eric replied 1 year ago.
HI,
I am sorry that you have not been helped yet. I just came online and saw your question
You need to check for power to the fuel pump. If power is present but no fuel at the engine, replace the pump.
If no power to the pump, then you will need to trace the wiring for a short between the fuel pump relay and the fuel pump