martinoq92

Hello again. Last thread got closed before I could even explain anything.
Installed OEM injectors. Am still running OEM fpr and for some reason fuel pressure is at 80 psi. Before I installed 550cc injectors fuel pressure was at 38-40. I have a gauge on fuel filter. And I still have backfire problem with full throttle. No fire but a good boom. Ecu fuse blow 3 times. I checked all wires on fuse box and under hood. could not find a short. I have my injectors connected correct so I am confused. Thanks for any help. no engine light

bks84

iTrader: (9)

I would guess your gauge is broken.

Uhm.

Coil or ignitor may be getting weak.

martinoq92

When fuel pump primes its at 40. As soon as I start it it shoots to 80.

martinoq92

Also changed rotor and cap. New ngk iridium plugs.

EsotericImage

iTrader: (8)

the valve in the FPR is stuck.

look for another as these are about 20 bucks used.

then after we get your fuel pressure back to normal, then we can diagnose your other issues.



what brand pressure gauge is this?

Marvin1985

iTrader: (5)

Is your fuel return line hooked up and free flowing? Just a guess that maybe it's flow is blocked off and fuel pressure is building up because of it.

martinoq92

Just replace return line. Also I bought a aftermarket fpr fully adjustable just has not gotten here yet. Tracking num says will get here today. Will see what happens. Thanks

EsotericImage

iTrader: (8)

An aftermarket full FPR or the Blox/B&M that uses your hacked OEM one?

martinoq92

Did a amp test on ecu fuse. In engine bay fuse box. Removed fuse conected test leads were fuse goes got a reading of 0.49 amps. Graphs says ecu fuse is 15amp so I should have over 10 amps there right? And from my understanding low amps- high resistance. High amps- low resistance.

martinoq92

Don't really understand ??? But I have to remove oem fpr install adapter then install the fpr kit. Did it to my old civic. Piece of cake.

martinoq92

found big news today. Fuel started leaking from banjo fitting. on fuel rail side. removed and replaced copper washers. still leaked. so I removed again and inspected fuel rail. noticed no hole for banjo fitting..... face palm, I had bought new fuel rail with out thinking. Jus bought adapters and gonna install 6an fittings with steel hose. will post an update when they get here.

B_Swapped93

Torque the bolt to spec...17ftlbs.

martinoq92

Sorry took awhile. Problem with fuel pressure was with the fuel rail. Bought a new fuel rail installed AN fittings, pressure back to 40. Found short replaced wire and pins. Car is running strong. Thanks for all the help.