PlatonicSolid
OBS Enthusiast
In the middle of replacing the fuel tank in the 89 GMC C3500XC and discover the 11” steel Evap pipe attached to the filler neck via 5/8 rubber hose is corroded to the point of having pin holes. Not sure why they didn’t just run a rubber line from the filler neck to the tank. Apparently you can’t purchase the evap pipe alone – only place I’ve found it is in a kit with the filler neck (Summit Link)= $100 by the time it gets to my door. Plus I want to finish this project while temps outside are tolerable.
I see 2 options:
1. Run 5/8 rubber fuel line from tank to filler neck. Will need to cut the metal loop bracket off the filler neck for cleanest routing since the hole is too small for the rubber hose.
2. Use 1/2" copper water pipe (measures slightly more than 5/8 OD)
I like the copper water pipe method, but when I google if copper can be used with gasoline I find everything from it’s perfectly fine to this will destroy your engine Armageddon.
I see 2 options:
1. Run 5/8 rubber fuel line from tank to filler neck. Will need to cut the metal loop bracket off the filler neck for cleanest routing since the hole is too small for the rubber hose.
2. Use 1/2" copper water pipe (measures slightly more than 5/8 OD)
I like the copper water pipe method, but when I google if copper can be used with gasoline I find everything from it’s perfectly fine to this will destroy your engine Armageddon.