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80 psi?

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Old 03-22-2012, 04:03 AM   #1
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Default 80 psi?

I've got a Walbro #dumF20000169 and Corvette FPR napa part #3737 installed on my LS3 480. I hooked a FAST fuel pressure gauge up to the rail and it says I have a CONSTANT 80 psi at idle. Is this normal? Is it ok? Is it a bad regulator? What should I test?
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Old 03-22-2012, 07:50 AM   #2
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NOT normal. Should be in the hi 50's range.
Check to see if you have issues with the return line off of the filter.
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Old 03-22-2012, 09:15 PM   #3
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Pulled the return line off the regulator and it was flowing great. Pulled the sender that houses the return line (saddle bag tank) and fuel was flowing in there really good. Replaced the FPR and still have 80 psi. Pump is getting 13.5v at idle. Any other ideas?
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Old 03-27-2012, 06:28 PM   #4
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Confirm your gauge is accurate.
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Old 03-31-2012, 09:50 PM   #5
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I'm having the exact same issue right now. What did you find out?
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Old 03-31-2012, 10:24 PM   #6
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Haven't messed with it. All my lines are strong enough to handle the pressure, so I just left it. I haven't double checked my gauge tho.
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Old 07-01-2012, 10:48 PM   #7
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I have the same problem ... Its because I have 2 regulators now ,, the one in the tank and the corvette filter .. I am currently trying to find a non regulated fuel filter that will snap into the same fittings ...
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Old 07-03-2012, 08:02 PM   #8
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Lightbulb And now..

Quote:
Originally Posted by Jesus Freak View Post
Haven't messed with it. All my lines are strong enough to handle the pressure, so I just left it. I haven't double checked my gauge tho.
U have an injector flow rate that's FUBAR................
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Old 07-04-2012, 11:52 AM   #9
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The flow rate was properly adjusted whith a tune. It was rich at idle and lean up top.
I found it was my gauge that is reading incorrectly.
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Old 07-05-2012, 06:56 AM   #10
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Default Ok....

Quote:
Originally Posted by Jesus Freak View Post
The flow rate was properly adjusted whith a tune. It was rich at idle and lean up top.
I found it was my gauge that is reading incorrectly.
Works for me.....
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Old 07-05-2012, 06:56 AM
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3737, 80, aeromotive, fuel, gauge, ls1, napa, part, pressure, psi, reads, tech


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