- Apr 27, 2014
- 19,409
I have seen this come up before and have now experienced this problem myself, SO I decided to go ahead and do a write up since I had to invent a repair anyway. As far as I know I am the first person to do this, so others may have better ideas this is just what I came up with.
Some of you know that my drive shaft broke and beat the heat shield on the gas tank which broke my vent valve. (pictured Below)
As you can see it was snapped right off, and there is really no way to repair it, I even tried gluing it back together with loctite 404 last week to no avail. So I started searching and to my surprise GM wants you to buy an entire new fuel tank for this little broken valve
I did however find a universal vent valve made by Doorman part# 911-001.
I started out by removing the old valve by cutting the ring with a razor knife, it is actually really easy to cut. I decided to pull the pump assembly out to check it since I started having problems with my truck stalling when coming to a stop. I found a LOT of little green pieces and the bottom half of the vent valve in the tank.
I took some precise measurements and determined what I would do next. I took a 7/8 drill bit and drilled a hole in the base of what USED to be the vent valve. Then I took a rasp and took the hole out to the first rib on the base, you can see it in the photo.
Next I took the new vent valve part # 911-001 and pressed it into the old base and it actually snapped in and was tight. You need to remove the tension ring and o-ring from the new part before inserting it.
At this point it was time to seal it all up, I had some 4000 PSI epoxy made by Super Glue that turned out to be great. Make sure the nipple is pointed in between the 2 dashes on the tank so it will line up with the hose.
After the epoxy has set cut the nipple of off the old vent valve. Then insert the cut side of the nipple into the hose leaving enough space for the locking clip on the fitting.
This is the finished product, it is stronger than the oem fitting and sealed back up nicely.
On a side note I found another shrader valve at the fuel tank to check fuel pressure, I did not know that one was there.
So far my truck is running much better and seems to be fixed. A used tank from a local yard was $150, and the valve I got only costs $18.
I hope someone will find this helpful!
Some of you know that my drive shaft broke and beat the heat shield on the gas tank which broke my vent valve. (pictured Below)
As you can see it was snapped right off, and there is really no way to repair it, I even tried gluing it back together with loctite 404 last week to no avail. So I started searching and to my surprise GM wants you to buy an entire new fuel tank for this little broken valve
I did however find a universal vent valve made by Doorman part# 911-001.I started out by removing the old valve by cutting the ring with a razor knife, it is actually really easy to cut. I decided to pull the pump assembly out to check it since I started having problems with my truck stalling when coming to a stop. I found a LOT of little green pieces and the bottom half of the vent valve in the tank.
I took some precise measurements and determined what I would do next. I took a 7/8 drill bit and drilled a hole in the base of what USED to be the vent valve. Then I took a rasp and took the hole out to the first rib on the base, you can see it in the photo.
Next I took the new vent valve part # 911-001 and pressed it into the old base and it actually snapped in and was tight. You need to remove the tension ring and o-ring from the new part before inserting it.
At this point it was time to seal it all up, I had some 4000 PSI epoxy made by Super Glue that turned out to be great. Make sure the nipple is pointed in between the 2 dashes on the tank so it will line up with the hose.
After the epoxy has set cut the nipple of off the old vent valve. Then insert the cut side of the nipple into the hose leaving enough space for the locking clip on the fitting.
This is the finished product, it is stronger than the oem fitting and sealed back up nicely.
On a side note I found another shrader valve at the fuel tank to check fuel pressure, I did not know that one was there.
So far my truck is running much better and seems to be fixed. A used tank from a local yard was $150, and the valve I got only costs $18.
I hope someone will find this helpful!
