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FRED · 04-09-2011, 06:53 AM

41 psi is close to normal on a car that is not running and only the fuel pump running. Car should start easily with 41. Normal is 37-39 psi on a non running engine.

The 54 psi is abnormal.............but heck, the car isn't even running so it matters not when talking about Starting the engine 'cause 41 is plenty fine for that. Idle pressure is in the 28-32 psi range.

Normally if checking just the pump output you'd install a pressure gauge on the outlet line of the filter (as in dead end the hose using the gauge) then turn the pump on. Normal is in the 70-80 psi range (memory, see book for exact figures).

04-09-2011, 06:53 AM	#5
FRED Rotary Fan in Training Join Date: Mar 2011 Posts: 73 Rep Power: 15	41 psi is close to normal on a car that is not running and only the fuel pump running. Car should start easily with 41. Normal is 37-39 psi on a non running engine. The 54 psi is abnormal.............but heck, the car isn't even running so it matters not when talking about Starting the engine 'cause 41 is plenty fine for that. Idle pressure is in the 28-32 psi range. Normally if checking just the pump output you'd install a pressure gauge on the outlet line of the filter (as in dead end the hose using the gauge) then turn the pump on. Normal is in the 70-80 psi range (memory, see book for exact figures). Last edited by FRED; 04-09-2011 at 06:55 AM.