Fuel pressure go zero when key off please Help~~~~~~~!!!!!!

samurai · **Joined:** Thu Jul 30, 2015 7:11 am **Posts:** 5

I just done the FPR and fuel gauge installation last mouth.
But I found if I turn the key off the fuel presure will turn to zero in 10 sec.
So I replaced fuel pump and fuel fitler, but did not help
I took the injector and do some leaking test, I dont think they leak
(hose with air presure on the injector end. plug in power, air out, no power hose will air presure)

So any one can let me know what s the problem ? and where can I can check?
btw I have 08 wrx STI ej25
cheers

ride5000 · **Joined:** Thu Aug 03, 2006 2:40 pm **Posts:** 1934

that's the aftermarket fpr. they are usually quicker to drain like that, since they aren't needle valves. my aeromotive 13109 does the same thing.

samurai · **Joined:** Thu Jul 30, 2015 7:11 am **Posts:** 5

ride5000 wrote:

that's the aftermarket fpr. they are usually quicker to drain like that, since they aren't needle valves. my aeromotive 13109 does the same thing.

Thanks for your reply. I got a tomei tyre s in local tomei dealer, not sure if the same,
any one got a tomei FPR and have some result?

welaish · **Joined:** Tue Apr 29, 2014 4:48 am **Posts:** 946

That is Normal with the aftermarket FPR and Subaru. Just standby the car before start to prime the Fuel pump.

RomRaider

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