Leak at fuel pressure regulator - ZR-1 Net Registry Forums

zr1eddy · 08-12-2018

Well I am almost done with replacing the injectors on my '90 Z. I put in all new viton o rings in the fuel rail lines. I have the fuel rail and injectors installed so I pressurized the fuel system to check for leaks. I am leaking at the fuel pressure regulator. I have made sure everything is tight. Anybody have this problem and have suggestions?

Thanks

Tim Edstrom

Dynomite · 08-12-2018

Quote:

Originally Posted by zr1eddy

Well I am almost done with replacing the injectors on my '90 Z. I put in all new viton o rings in the fuel rail lines. I have the fuel rail and injectors installed so I pressurized the fuel system to check for leaks. I am leaking at the fuel pressure regulator. I have made sure everything is tight. Anybody have this problem and have suggestions?
Thanks

Tim Edstrom

Yes.....Great time to get Phil's Improved Fuel Pressure Regulator

Post 283 - Phil's (Jagdpanzer) Fuel Pressure Regulator Solution

Ccmano · 08-12-2018

Or... if you want to stay OEM I have low mile one for sale.
H

Dynomite · 08-12-2018

Quote:

Originally Posted by Ccmano

Or... if you want to stay OEM I have low mile one for sale.
H

Leaking at the Fuel Pressure Regulator could mean an "O" ring started to leak (installed improperly or damaged during installation).

Regimof3 · 08-13-2018

Ugh.

I went through this. When my old man had it years ago he had a leaky one. I'm not sure what happened or what caused it but he had a local shop replace it and it started to leak again shortly thereafter.

I had that one replaced at a Chev dealership to the tune of 800 ish dollars. It was quite a hassle to just find one and now it's a little nerve racking because 1 going out is weird and 2 going out is almost unheard of.

secondchance · 08-14-2018

Is it leaking internally - fuel dripping into the vacuum hose to intake - or externally - at fuel line connection to FPR?
If internal, diaphragm failure. If at fuel line connection, seal failure.

08-12-2018	#1
zr1eddy Join Date: Apr 2016 Location: Algonquin, IL Posts: 21	Leak at fuel pressure regulator Well I am almost done with replacing the injectors on my '90 Z. I put in all new viton o rings in the fuel rail lines. I have the fuel rail and injectors installed so I pressurized the fuel system to check for leaks. I am leaking at the fuel pressure regulator. I have made sure everything is tight. Anybody have this problem and have suggestions? Thanks Tim Edstrom

08-12-2018	#3
Ccmano Join Date: Jun 2006 Location: Sparks, NV Posts: 2,852	Re: Leak at fuel pressure regulator Or... if you want to stay OEM I have low mile one for sale. H __________________ 90'ZR-1 #1461 Red/Black Ported Intake, Degreed Cams, OBX Headers & Exhaust, Fidanza FW, Secondary Delete, Custom tune, C6 GS Wheels. Sold 08 C6 Z51 Crystal Red Metallic Sold Vararam Intake, Tune, Sold 05 C6 Z51 Red/Black Sold 90'ZR-1 #1723 Black/Gray Sold but not forgotten 91' Z51 L98 White Vert. My First, you always remember your first. Sold.

08-13-2018	#5
Regimof3 Join Date: Jun 2018 Location: Elko mn Posts: 49	Re: Leak at fuel pressure regulator Ugh. I went through this. When my old man had it years ago he had a leaky one. I'm not sure what happened or what caused it but he had a local shop replace it and it started to leak again shortly thereafter. I had that one replaced at a Chev dealership to the tune of 800 ish dollars. It was quite a hassle to just find one and now it's a little nerve racking because 1 going out is weird and 2 going out is almost unheard of.

08-14-2018	#6
secondchance Join Date: Aug 2006 Location: McLean, VA Posts: 3,723	Re: Leak at fuel pressure regulator Is it leaking internally - fuel dripping into the vacuum hose to intake - or externally - at fuel line connection to FPR? If internal, diaphragm failure. If at fuel line connection, seal failure.