MattB

is it...and why is it on the secondary rail from my J-Spec???

my car is running like ****...i have compression...i have spark...fuel pump runs when i jumper it...but when i squeeze the fuel line nothing really happens. im guessing its my FPR so i need to replace it but no one stocks them...it looks like one but im not sure...

I cant get to work...and my boss is telling my i have a lot of stuff to get done...HELP

-Matt

MattB

forgot the pics...here you go

and i heard something about fuel flowing backwards on the J-spec fuel rails...is that why its like this?

kungfuroy

iTrader: (6)

CHeck your direction of flow. the FPR should be the last thing the fuel hits before it goes back into the gas tank.

MattB

yeah...its the last thing it hits...any way to fix my problem?

t-too

WOA is that true that fuel flows the opposite direction in a jspec? I havent finished putting mine back together but i was really confused at the reversal of the fpd and the fpr...

MattB

as far as i know...in the Jspec engine fuel flows into the primary rail, across, down to the secondary rail, across, and out the fuel pressure regulator... and in the US spec its just the opposite...

eastcoastdrift

that is your fpr, it has the vac nipple on it. check your fuel filter my be clogged, and when you squeeze the line are you doing so on the return side of the fuel system? or fuel in side after the fuel filter? make sure your return line is connected to your primary rail ( the one pictured) with your fpr on it.

MattB

the one i took a picture of is my secondary rail...and my return line comes off my FPR to the return line on the tank...and the line coming in comes from the high pressure filter (replaced 10,000miles ago) i am squeezing the IN side...not the return...

at this point i cant get it to run...i dont know why...(i think its extremely flooded and every time i de-flood it it just floods itself right as its about to start and stalls out...

eastcoastdrift

hmm leaking fuel injectors possibly?

NZConvertible

No, your picture is of the J-spec primary rail, which has the FPR. Make sure it's connected to the return line.

MattB

well i connected it to my US Spec primary rail...which is where the return line is...

t-too

Why did they switch the placement of the fpr and pd on us and jspecs?

NZConvertible

It's a mystery. Nobody's come up with a plausible reason yet.

t-too

Huh... well i'm really glad this thread came up because i definitely would have been running my fuel lines backwards.

rotorforce

I was going to say it should be on the secondary on a USDM spec engine.