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Engine gets fuel, but no pressure (K-jet) 140-160 1974

posted by  Kåre on  Sat May 1 19:36 CST 2004
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After a several month hibernation, I tried to start the car a few days ago. It ran for a minute and then stopped. In the course of troubleshooting, I found the fuse to the fuel pump was corroded, so I cleaned it. Now the fuel pump would run, but still no start. I then removed the air duct from the fuel distributor to the intake manifold and tried lifting the air flowmeter plate. This should be quite hard because fuel pressure wants to keep the plate down. I could lift the plate easily and repeatedly and each time it got off it's rest position I could hear the fuel pump relay click and the pump started running. But, no build-up of fuel pressure. The only culprit I can think of is the fuel pressure regulator. Is there any other possible fault, or is there a foolproof way of isolating this to the pressure regulator? I just want to be as sure as possible I replace the right part.

Thanks,
Kåre






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