Pin Hole Fuel Leak

[bsb1957]

Smelled fuel yesterday then noticed a small spot on the driveway just in front of the rear wheel under the framerail.I got underneath with a rag and started wiping the lines down and found a pinhole leak.Now i know if its leaking in this spot its probably going to go in another spot soon.I was thinking for now do i dare try to cut that bit of bad line out and clamp a piece of rubber fuel line for a quick fix?Is it a big job to replace that entire line?Im thinking that once i start to handle that gas line for a splice job that its going to crack in another spot.Any thoughts and comments are always appreciated.

Also i see that there are four lines stacked along the rail.My leaker was second from bottom i believe.Was wondering what they all carried?

[nige]

i replaced the rotten part of my fuel line, but be prepared to replace any other lines grouped with it as they are also probably ready to go too. My brake line started leaking when i took off the clamps that hold the line to the inside of the frame. I ap pretty sure the other line is for fuel vapor which goes to the carbon canister. Trace them to find out where they go.

 

If you patch the high pressure fuel line with rubber, make sure you use the proper clamps to secure them; not hose clamps. The factory brake lines are somewhat inexpensive compared with bending your own ( unless you have spare time and the brake tube tool) so if they look corroded at all, it's best just to buy a new one.

[nismothunder]

JB Weld works wonders on hard fuel lines...

[bsb1957]

Well i think i took care of that fuel leak.I got under there and took off a couple of the brackets that hold the lines in place,cleaned the crud from between the lines and between the lines and the frame.After wire brushing eveything down(all this work is between the rear wheel to between the front and back doors)it all looked nice and clean.I crossed my fingers and pressurized the system and expected to see leaks all over the place but suprisingly i just still had the one leak.Instead of cutting and splicing the line i just took a 4 inch piece of rubber fuel line and slit it lengthwise enabling me to wrap it around the trouble spot.Using some silicone type sealant i sealed the seam and turned the hose so the the seam was between the line and the frame,then used three band clamps to secure the hose(one right over the pinhole and the other two on each end).Initially i thought those lines would be weak and brittle but they were stll pretty solid as i had to get a screwdriver in there to move the lines in order to get the hose on and the clamps around it.To finish off i sprayed a rust inhibitor primer over the entire area then sprayed a black coat of rust paint.Took the truck for a couple rides and it seems fine for now.