fuel line check valve
Thread Starter
Melting Slicks
Joined: Nov 2003
Posts: 3,011
Likes: 9
From: Dublin GA
fuel line check valve
Where can I find a fuel line check valve for a 98?
I posted on another thread that I had a fuel bleed down problem. After speaking with a VERY well known vendor, he instructed me to block off the return line and switch the car on. If the pressure held, it was a bad regulator; If it lost pressure (59-0 in 4-5 secs) it was a bad check valve. I have a diagram that shows where it's located, but can't find one listed in the gm parts catalog.
I posted on another thread that I had a fuel bleed down problem. After speaking with a VERY well known vendor, he instructed me to block off the return line and switch the car on. If the pressure held, it was a bad regulator; If it lost pressure (59-0 in 4-5 secs) it was a bad check valve. I have a diagram that shows where it's located, but can't find one listed in the gm parts catalog.
Team Owner
Joined: May 2001
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Where can I find a fuel line check valve for a 98?
I posted on another thread that I had a fuel bleed down problem. After speaking with a VERY well known vendor, he instructed me to block off the return line and switch the car on. If the pressure held, it was a bad regulator; If it lost pressure (59-0 in 4-5 secs) it was a bad check valve. I have a diagram that shows where it's located, but can't find one listed in the gm parts catalog.
I posted on another thread that I had a fuel bleed down problem. After speaking with a VERY well known vendor, he instructed me to block off the return line and switch the car on. If the pressure held, it was a bad regulator; If it lost pressure (59-0 in 4-5 secs) it was a bad check valve. I have a diagram that shows where it's located, but can't find one listed in the gm parts catalog.
It is referred to as: "Hose, fuel feed rear" in Group 3, illustration #33 on page 2-I4 on my CD-ROM.
HTH
Instructor
Joined: Mar 2024
Posts: 150
Likes: 1
From: Arizona
Your post has saved me a lot of time and money. My mechanic insisted that the fuel check valve in my 97 C5 was in my new fuel pump but I keep losing pressure in the fuel rail, as soon as I turn off the key. I now have a new pump and a new fuel pressure regulator but the fuel rails continue to immediately lose pressure. The injectors are fine. Now that I know where the fuel line check valve is located, I can concentrate on finding that part. Once I locate and purchase it, is it very difficult to install in my 1997 C5?
Instructor
Joined: Mar 2024
Posts: 150
Likes: 1
From: Arizona
The check valve itself is made into (and is a non-removable part of) the output pipe that goes to the fuel filter. This particular "pipe/hose" (black nylon tubing) comes out of the left tank and branches into a "Y" with one leg of the "Y" going to your fuel filter and the other leg of the "Y" going to the right tank. The check valve is incorporated into the leg that goes to your filter.
It is referred to as: "Hose, fuel feed rear" in Group 3, illustration #33 on page 2-I4 on my CD-ROM.
HTH
It is referred to as: "Hose, fuel feed rear" in Group 3, illustration #33 on page 2-I4 on my CD-ROM.
HTH
