Engine/Transmission (1994 - 1998) Replace fuel lines on 98?

[Johnstra]

I found a couple of threads that discussed something I'm curious about. 98 model 12V trucks use a pair of semi-rigid lines from the steel lines on the frame to the steel supply/return lines at the engine. Has anyone replaced these with LarryB's (or other high quality) fuel hose. I know the 7. 3L PSD had a short section of this type of line on the supply side and it was highly recommended that it be swapped out for flexible line. Reason being, the o-rings in the quick disconnects deteriorated and let air into the system. I have LarryB's fuel hose on the way and I'm planning to get rid of the semi-rigid stuff and the QDs. Any reason I shouldn't?

-john

 

[KWentling]

I replaced mine (with Larry B's) when chasing an air leak. Turned out to be the fuel heater electrical plug-in had over heated and was leaking. My hoses from the frame looked like brand new and didn't need replaced, but I couldn't tell that untill I had them off. Those hoses are rubber and are sheathed in a plastic like material. Looked to be equal or better material than Larry's and was a tighter fit on the steel lines. Larry's hoses were a loose fit to the steel lines, but the clamps do seal them up OK. I was a little worried about it at the time. The hose from the overflow valve was the only one that was showing it's age. I wouldn't replace the frame hoses unless you can see a good reason to or have eliminated other air leak sources and suspect them to be the problem.



Kim

 

[Johnstra]

Thanks, Kim. That's the kind of information I was looking for.

-john

 

[bmoeller]

I bought Larrys kit as well. The return was in the worst shape, and leaking. Pics in RR.