Fuel pressure problem

Old 08-04-2008, 07:15 PM
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mopar1968
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Default Fuel pressure problem

:? Ok to start this, fuel pressure is running at 15 psi on pressure gauge, would not adjust down, replaced regulator with holley regulator, ran couple times, guess what 15 psi again, ordered a billet regulator from Ron Owens installed guess what ? you guessed it 15 psi again, i have adjustment screw all the way down flush with top of regulator to get 7 1/2 pounds. Any answer's to what may be going on? plugged filter? bad pump?
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Old 08-04-2008, 07:26 PM
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zipper06
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Gage, not right, if the carbs are not leaking by i doubt if you really have have 15psi to the carb. I'm not a carb person, totally injection, so i could be way off o this one.

JMO

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Old 08-04-2008, 07:47 PM
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hammertime
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1st thing I'd do is replace the gauge.
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Old 08-05-2008, 10:53 AM
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Scooterz
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Mopar: I have replaced 3 Holley reg's in 6 months... one of which had a good diaphram, but was allowing fuel by it from faulty machining... causing fluctuating fuel pressure. I have one guage on the dual feed, & another liquid filled unit separately now so I can check them against each other to make sure the pressure is right.
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Old 08-05-2008, 01:48 PM
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mopar1968
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:? I have allready replaced the gauge with a liquid filled one, three regulator's later still high pressure, no fuel flowing in carb, needles holding properly. :?: :?: By the way the gauge is mounted to one side of regulator and line to carb on other side of regulator :!: :!:
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Old 08-05-2008, 03:02 PM
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hammertime
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Which fuel pump do you have ?
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Old 08-05-2008, 05:41 PM
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mopar1968
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holley blue pump.
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Old 08-05-2008, 07:42 PM
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Scooterz
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You don't have a return right? Man.... that does not make sence... I can see why you are stumped right now. I wonder if a air is entering into the fuel system somehow...
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Old 08-05-2008, 07:43 PM
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mopar1968
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Right no return. I would love to go to fuel injection but know nothing about it.
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Old 08-05-2008, 07:46 PM
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Scooterz
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Amen to that... same here. The Holley blue... is it maxed at 15psi/output?? or can it produce more?
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