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1987 Carerra cranks but doesn't start

Les Steers

By Les Steers
in 911, 912 Series

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Les Steers Member

Les Steers

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Battery fully charged, starter motor spins but engine does not start, not even cough. Before replacing the fuel pump I am hoping to find a simple, less expensive solution by first checking fuses and relays. The DME relay is ok. The "luggage compartment fuse/relay panel" contains the fuel pump fuse which is also ok. That panel also has 6 round (2 black, 4 red) relays located in a row above the fuses. I understand one operates the fuel pump but I don't know which one is fuel pump related. My local Porsche Dealership parts dept. doesn't have the answer. Please let me know if YOU DO 😉

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Les Steers Member

Les Steers

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UPDATE>>> DISREGARD THE QUESTION. MY INFORMATION SOURCE WAS MISTAKEN!! NONE OF THESE ROUND RELAYS ARE PART OF THE FUEL PUMP SYSTEM, ONLY THE DME RELAY UNDER DRIVER'S SEAT AND A 25 AMP FUSE IN THE FUSE/RELAY PANEL LOCATED IN THE LUGGAGE COMPARTMENT. PROBLEM MUST BE THE PUMP.

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