Replacing Fuel lines

Tiny
MIKEWWW
  • MEMBER
  • 1997 GMC JIMMY
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 176,000 MILES
I am replacing the rusty fuel supply & return lines on my 97 Jimmy. Are both lines under pressure or just the supply line? I was using a high pressure rubber fuel line for the job but it is very expensive. I wanted to know if I could use a regular low pressure fuel line (much cheaper) for the return to the tank.
Thanks
Thursday, June 4th, 2009 AT 4:29 AM

5 Replies

Tiny
2CARPRO JACK
  • MECHANIC
  • 11,533 POSTS
I wouldnt suggest it. The entire system is under more pressure than regular fuel line can handle.I suggest getting a cheap tubing bender, a flaring tool and some double flare connectors and using metal line.
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Thursday, June 4th, 2009 AT 7:44 AM
Tiny
SEANJEFF
  • MEMBER
  • 1 POST
  • 1996 GMC JIMMY
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 215,000 MILES
I have a 96 Jimmy and the fuel line is leaking. Do I have to drop the fuel tank in order to repair the leak with nylon gas line? It is leaking on the line below the drivers door.
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Monday, September 2nd, 2019 AT 12:19 PM (Merged)
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
You don't have to drop the fuel tank Cut the line right there and splice in make sure the fuel hose will hold the specified fuel pressure
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Monday, September 2nd, 2019 AT 12:19 PM (Merged)
Tiny
COLBYCINN
  • MEMBER
  • 1 POST
  • 1993 GMC JIMMY
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 145,000 MILES
How do I replace the fuel line on the 1993 GMC Jimmy?
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Monday, September 2nd, 2019 AT 12:20 PM (Merged)
Tiny
INTERNETMECHANIC
  • MECHANIC
  • 700 POSTS
Hi, some of these procedures, you need to use your own initiative. If it is a steel line, the autostore probably sells what you need. You may need a tubing bender to put the proper bends in the new line. Use the old line as a template for the bends. There is a safety issue with fuel lines, the responsibility is yours.
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Monday, September 2nd, 2019 AT 12:20 PM (Merged)

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