1st Generation Specific (1979-1985) 1979-1985 Discussion including performance modifications and technical support sections

fpr problem

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Old 06-27-09, 05:49 PM
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fpr problem

hey guys i'm having some problems with my fpr... the fpr is working but the gauge isn't reading at all...anybody have some suggestions? thank you in advance
Old 06-28-09, 10:40 PM
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we need more info... did you just install the fpr? what fpr is it? return style? do you have a pic of it installed? are you shure that the lines are on the correct ports? is the gauge installed on the fpr? and...... is it for a carb or fi?
Old 06-28-09, 11:15 PM
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Many fuel gauges are notoriously inaccurate, particularly in the 0-15 psi range, Billy at ReSpeed sells what is probably the best low psi gauge out there. It also comes with a dry break feature so it doesn't need to be installed all the time. Before you purchase a new gauge, make sure you have the current one reading from the correct port. Most fprs have more than one output port, that's where the gauge needs to be reading from.

Post the brand of both the fpr and fpg along with how it's plumbed.
Old 06-29-09, 10:57 AM
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yesterday i fixed some of the wiring to my fuel pump and changed the fuel filter near the pump... started the 7 and the needle in the gauge moved a little... so then i tightend the fittings a little more but the needle was still seating a little above 0... then i started looking at the gauge itself and noticied that there was a little rubber bushing on it... so i took it off and the liquid inside started to come out so i put it back... but when i looked at the gauge the needle jumped up to 5 psi...
george from european sold me the liquid filled gauge... is there a certain way to use the gauge? do i have to remove that rubber piece to make the needle move?
Attached Thumbnails fpr problem-img_1727.jpg   fpr problem-img_1726.jpg   fpr problem-img_1728.jpg   fpr problem-img_1729.jpg  
Old 06-29-09, 12:05 PM
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You have a liquid filled guage from Summit with a Holley fpr. So far it looks like it's plumbed correctly. I would add a 45 or 90* elbow so the guage can be read easier. I prefer 0-15 psi gauges, they are easier to read and tend to be a bit more accurate when adjusting the fpr. It's possible a piece of the teflon sealing tape is blocking the opening to the guage. Liquid filled guages can present a unique problem in that often they are only accurate around the temperature range in which they were assembled.
Old 06-29-09, 01:18 PM
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Originally Posted by trochoid
You have a liquid filled guage from Summit with a Holley fpr. So far it looks like it's plumbed correctly. I would add a 45 or 90* elbow so the guage can be read easier. I prefer 0-15 psi gauges, they are easier to read and tend to be a bit more accurate when adjusting the fpr. It's possible a piece of the teflon sealing tape is blocking the opening to the guage. Liquid filled guages can present a unique problem in that often they are only accurate around the temperature range in which they were assembled.
thank you for reply back... i will take the fitting out wen i get to work and i'll let you know the results thank you again
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