740 fuel line replacement - sizes, advice?
#1
740 fuel line replacement - sizes, advice?
Hi all,
Bought a new brick to replace the old brick (740 wagon) as the new one has 170k less miles on it and is comparatively rust free.
Just noticed I have fuel leaking near the fuel filter, the lines are rusted.
Was thinking I could replace the steel lines with high-pressure braided hose.
Any advice on size, pressure rating, installation etc?
Thanks!
Dave
Bought a new brick to replace the old brick (740 wagon) as the new one has 170k less miles on it and is comparatively rust free.
Just noticed I have fuel leaking near the fuel filter, the lines are rusted.
Was thinking I could replace the steel lines with high-pressure braided hose.
Any advice on size, pressure rating, installation etc?
Thanks!
Dave
#2
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In looking into various fixes, I noted RockAuto has some really inexpensive fuel filters supposedly for my 740, but they have non-threaded nipple-type ends. If I can use them I'm going to buy four to replace both on my two bricks and have two for the next time I need them (I like to replace them every five or six years).
Any reason I shouldn't use flexible high-pressure fuel line (Advance Auto said they have it)?
I see the value in cuprnickel for brake lines as they have to hold very high pressure and not expand (not to mention the anti-corrosion quality), but for fuel (even on fuel injection) it seems a flexible line should work fine and not rust.
Thoughts?
Any reason I shouldn't use flexible high-pressure fuel line (Advance Auto said they have it)?
I see the value in cuprnickel for brake lines as they have to hold very high pressure and not expand (not to mention the anti-corrosion quality), but for fuel (even on fuel injection) it seems a flexible line should work fine and not rust.
Thoughts?
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Don't know what the Autozone flexible line was made of. I know that Oreilleys sells the plastic fuel injection line that is the same that came standard on the 240s. It is a hard plastic line - stiff but flexible. This line seems to hold up over time rather nicely as I installed a new banjo bolt on my '90 240 and I was able to cut it and splice in a new piece using boiling water to heat up the plastic to make it pliable for insertion of the splice fittings.
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