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I am just getting an LS! swap with a mild cam running and It's cutting out. I hooked up a fuel pressure gauge at the rails and this is what I get,
60+ psi with the key in the run position (not running)
30 psi when the engine is running
I ran the pump straight off the battery with the same results. Any ideas?
Thanks
I am just getting an LS! swap with a mild cam running and It's cutting out. I hooked up a fuel pressure gauge at the rails and this is what I get,
60+ psi with the key in the run position (not running)
30 psi when the engine is running
I ran the pump straight off the pump with the same results. Any ideas?
Thanks
Well I changed the pump and filter/regulator today and nothing changed .still have 60 psi with key on (engine off) and 30 psi engine running. Any thoughts?
Thanks
Here is how I have the system plumbed and wired. The efi harness is a painless. I ran the pump directly off the battery and started the car but that didn't change anything. Since I was able to get full flow through the hose up to the rails I don't think there is an obstruction in the supply line. Today I will check the rails for blockage.
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Low fuel pressure only while running 
