Chevrolet Repair: REPLACING A RUSTED FUEL LINE, fuel line, fuel rail

Question
I HAVE A 1991 CHEVY 4WD BLAZER WITH THE FUEL LINE FROM THE FUEL TANK ARE RUSTING BADLY. I WOULD LIKE TO REPLACE THEM NOW BEFORE THEY START TO LEAK. CAN I USE RUBBER HOSE TO REPLACE THEM OR METAL ONLY. I DO HAVE TO REPLACE ALL THREE OF THE LINES SINCE THEY ARE IN THE SAME CONDITION.

Answer
Hi Bill,

Rubber fuel lines do exist and you can use them.  

First thing to remember is fuel line size must be the same as what was there.  

If you follow the old line, you will find rubber areas, where they are crimped to the metal at the factory.  These crimped connections are actually rubber over flared fitting, on the metal.  If you carefully removed the metal factory crimp, and pulled the metal out of the rubber, you could reuse the rubber areas.  Just slide a new fuel line into the rubber end, and hose clamp it in place.  This is good around the supply and return to the fuel rail/throttle body...which ever you have.  

At the tank, the piece between the sending unit and the metal line is usually rubber.  

I would use as much metal as you can.  I know they are usually too long or too short.  If I had to, I would use the too short, and make the distance up with fuel rated rubber.  I would try to reuse the pieces that go to the fuel system under the hood.  

This is pretty easy.  Good luck with it.  

Hope this helps.

C J S