having problem adjusting adjustable fuel regulator on rb25 gtt

[MiTec-i]

Hi,I'm having problems adjusting my adjustable fuel regulator.I can't adjust the pressure no matter how my mechanic use different way of connecting it.do u guys had any problem bout this?I'm driving a 4door r33 GTT rb25 ...ur advice is very much appreciated.thank you.by the way how many regulators is there?i had removed 2 from the engine bay...still new to rb engines...I'm trying to DIY this...

 

[kaminari]

Where you buy the regulator?There are 2 STD regulator at RB25 engine bay.

 

[lemon_demon]

waa simon, welcome to da club

 

[frootloops]

a bit off topic..mr lemon demon..where did u get the diffuser fins done?

 

[MiTec-i]

Haha...u godfather GTR...diff category d...
So do I remove those 2 regulator? I'm using works afr now....still can't adjust...

 

[feezdya]

wahh lemon demon bersuara!!!

 

[kaminari]

Haha...u godfather GTR...diff category d...
So do I remove those 2 regulator? I'm using works afr now....still can't adjust...

RB25 have 2 STD Fuel regulator, 1 for intake and another is for return. Just remove 1 STD intake fuel regulator not all. Remove the std regulator located at fuel line.Should that will works for WORK regulator :) ...what`s ur current pressure reading?

 

[MiTec-i]

Wat about the connection...I see there 4 hoses connecting the fuel rail...so should I disable 2 of the hoses?now I connect 2 hoses only.1 from fuel filter to fuel rail,the other to the regulator..correct?now reading on idling only 2bar still can't adjust.suspect the warlbro not working well....headache la...

 

[reintel]

Use the hose from fuel filter to the fuel rail. remove the standard fuel regulator.

I have a hunch that ur works regulator has internal leak thus not working as intended. I saw once this thing happen but not in nissan engine.

 

[MiTec-i]

Isn't the fuel regulator supposed to be plugged to the return line? I give up already...anyone can suggest a good place to do this?

 

[kaminari]

Wat about the connection...I see there 4 hoses connecting the fuel rail...so should I disable 2 of the hoses?now I connect 2 hoses only.1 from fuel filter to fuel rail,the other to the regulator..correct?now reading on idling only 2bar still can't adjust.suspect the warlbro not working well....headache la...

I`m not understand what do you mean by 4 hoses but maybe you meaning of by-pass the damper regulator(should not be the main reason of unadjustable pressure/low pressure). Provide you the fuel flow diagram from start point to end point(to tank), replace the regulator (cyan square marked,fuel return side) you will need fitting and hose to replace OEM regulator.

What`s your fuel pressure for OEM regulator?Might 1 of these possibilities:

1. Faulty fuel pump /low voltage supply to fuel pump
2. Faulty fuel regulator (a lot imitation products in our market)
3. Leaking hose, fuel rails or injector seals.

You should discuss with your mechanic to troubleshoot with OEM regulator or fuel pump,get OEM pressure reading. You might get your answer for the problem.

 

[MiTec-i]

Thanks a lot kaminari...I will try to do wat u said...hopefully will solve the prob