[Rickorino]

I had the same problem a few years ago. I used rubber hose and clamps designed for fuel injection systems. I believe the SAE number was 30r6. Others, please correct me if I am wrong. I replaced the entire length, both the 5/16 high pressure and the 1/4 inch return lines. The return can be regular gas hose.

 

[Bob Lincoln]

Wrong.

Nylon won't hold under the pressure and chemical exposure. If the steel line needs replacing, replace it with steel. Use a tubing bender ($5) and a flaring kit.

Fuel injection hose must be rated SAE 30R9. Do NOT use 30R6 or 30R7, they are not rated high enough for the fuel pressure that the system will see. Use fuel injection (solid band) clamps.

 

[tph318]

It was just a thought. I did some research on the net and found that people have done this with success. Bob if it won't hold pressure, why do they sell replacement nylon lines with push connectors for our cars ? http://shop.advanceautoparts.com/webapp/wcs/stores/servlet/product_5-16-inch-quick-connector-straight-with-18-inch-of-5-16-inch-nylon-tube-and-union-dorman--oe-solutions_16140066-p?navigationPath=L1*14932|L2*14985|L3*15352

 

[Bob Lincoln]

Notice that when you click on "Specifications", there are none given. 30R9 hose is good to 150 psi. NAPA also carries marine fuel injection hose, 100R6, which has a burst rating of 400 psi. That's what I use. You can try nylon, but I prefer not to do a job twice. Steel won't abrade through or degrade with heat like nylon will.

 

[tph318]

I'm going to use steel . I was just curious about nylon.