I know JB Weld will fix most anything except some plastics and holds well on metals. I have heard it being used on gas tanks and never heard of it leaking after it was used. However, someone told me that modern gas will eat thru it. I dont see where modern gas is much different than the gas was 10 years ago. I guess most of it has some alcohol in it, but will alcohol hurt the JB Weld?
I have a 91 Chevy truck and there is a pin hole leak in a gas return line in the fuel pump outlet, right before it enters the hose. I'm not going to spend $250 to buy a new in-tank fuel pump (that's what I was quoted), when the pump works fine. I would have thought the JB Weld would be fine, but if not, I will have a guy solder it or braze it (after all the gas is flushed out by pumping water thru it). But the JB Weld is the easiest and cheapest method to fix it.
Also, these lines have a gas hose with some really weird fittings that need some special tool. The guy at the parts store told me I cant just use regular fuel hose and clamps because fuel injection engines have high pressure. How high can it be? I doubt it comes even close to the 100psi rating of the gasline hose, and if it does, I'll use air compressor hose rated at 300psi. At the same time, I had a guy who works on cars as a hobby tell me that he has used gasline hose for fuel injection lines. So, who is right? I tend to think that auto parts store guy wanted to get his grubby hands into my wallet with his $250 fuel pump, $20 special tool, and $28 special hose. $300 to fix a damn fuel line leak is insane (not to mention the hassle of removing the whole gas tank).
I hate working on these newer cars. Give me something prior to 1970 to work on, when things were still simple and parts were not sold by crooks.
Jimw