Boostedjesus
Probationary Member
- 8
- 7
- Mar 5, 2020
-
Paso Robles,
California
So I've been battling a fuel pressure drop for a while, I finally started going thru items to test and check and I finally got it resolved!
i started by logging fuel pressure with link thru the factory MDP plug. Just a eBay 0-100psi sensor.
Replaced/tested:
-changed my walbro 450 to a walbro 525 without check valve
-did the fuel siphon mod (2g gsx) 1/8” drill bit
-6an bulkhead fitting with -6an line with adapter to oem hard line.
-tested the diaphragm on the afpr and opened it up and cleaned it.
-redid vacuum line straight from manifold to afpr
-replaced the relay for the rewire kit
And after everything i was still having a fuel pressure drop in boost. I finally decided to check my (aeromotive) fuel filter and it was a paper style and was old/dirty so i ordered a replacement micro glass filter cartridge and instantly my fuel base pressure climbed and no more fuel pressure loss in boost.
So before going thru the headache of running a bulkhead and all the other little things, everything check your fuel filter first.
i started by logging fuel pressure with link thru the factory MDP plug. Just a eBay 0-100psi sensor.
Replaced/tested:
-changed my walbro 450 to a walbro 525 without check valve
-did the fuel siphon mod (2g gsx) 1/8” drill bit
-6an bulkhead fitting with -6an line with adapter to oem hard line.
-tested the diaphragm on the afpr and opened it up and cleaned it.
-redid vacuum line straight from manifold to afpr
-replaced the relay for the rewire kit
And after everything i was still having a fuel pressure drop in boost. I finally decided to check my (aeromotive) fuel filter and it was a paper style and was old/dirty so i ordered a replacement micro glass filter cartridge and instantly my fuel base pressure climbed and no more fuel pressure loss in boost.
So before going thru the headache of running a bulkhead and all the other little things, everything check your fuel filter first.
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