fuel pressure problems.
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Joined: Nov 2003
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From: Norn Iron
Clearly the FPR is doing what it's supposed to do. The 42/50 proves that.
Draw a schematic, detailing exactly how you have it configured and the size of any lines. Any descriptions so far are very vague.
But your first setup should have worked. You proved the system is capable of making pressure, ie 100psi. So the only issue can be a lack of fuel flow.
And as I said, that feed line into the reg looks bloody small. it may have a -6 threaded fitting on it, but what size is the actual hose ?
Draw a schematic, detailing exactly how you have it configured and the size of any lines. Any descriptions so far are very vague.
But your first setup should have worked. You proved the system is capable of making pressure, ie 100psi. So the only issue can be a lack of fuel flow.
And as I said, that feed line into the reg looks bloody small. it may have a -6 threaded fitting on it, but what size is the actual hose ?
I just glance through this thread, so that being said, do you have both pumps power at one + if so both pumps need a seprate power source.Exampe>> one pump at te battery singal through a relay, pump two can go through the car harness. I had this same issue with dual walbros. They work best with seprate power sources.
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I just glance through this thread, so that being said, do you have both pumps power at one + if so both pumps need a seprate power source.Exampe>> one pump at te battery singal through a relay, pump two can go through the car harness. I had this same issue with dual walbros. They work best with seprate power sources.
I sure did that fix my issue. On another note walbros dont like to be deprived of voltage. Once i fixed my issue both of them went out, But i replaced them both and ran good for 3 years.
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Verdad Gallardo 9 Second Club
Joined: Nov 2003
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From: Norn Iron
Is there actually a point to the post above ?
First off, he has proven the pumps are capable of producing more than 60psi. And secondly, he isnt even using the 392 which is an external in-line pump.
But even if he was, it would still be capable of more than 60psi.
First off, he has proven the pumps are capable of producing more than 60psi. And secondly, he isnt even using the 392 which is an external in-line pump.
But even if he was, it would still be capable of more than 60psi.
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Joined: Nov 2003
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From: Norn Iron
This is what concerns me about these 340+ pumps. One alone draws nearly double the current of an OEM pump, so you can see people thinking they are a drop in solution with no thoughts to the wiring.
Just like the above, A pair of basic Walbros will be more than doubling the current normally passed through the wiring, so it's just crazy to attempt to fit a pair and not wire them appropriately.
It not only endangers pump life, but is a potential fire hazard too, by overloading wires and connectors.
At least you found the problem.
Just like the above, A pair of basic Walbros will be more than doubling the current normally passed through the wiring, so it's just crazy to attempt to fit a pair and not wire them appropriately.
It not only endangers pump life, but is a potential fire hazard too, by overloading wires and connectors.
At least you found the problem.