Fuel Line

Fuel Line Replacement

cosmicray48236 8/22/01

I need to replace the steel fuel line from the tank forward to the engine compartment on a 47 CC. May I use copper line or is it better to replace the steel line with a new steel line.

bltlar 8/22/01

On my HS used steel brake line. Don't know why could not use copper as it should not work harden in the few miles we run. Brake line is correct thread and cheap, but in time may rust. Thought about very short steel and rubber fuel line.

hopscreen 8/22/01

Some rubber fuel line will not hold up under modern gasoline. Use fuel injection rubber line, which is believe is marked 30R9, and a lot more expensive than regular rubber. I have some new old rubber lines that I can't use because they actually dissolve in today's gasoline.

chuckhk1941 8/22/01

The use of copper for fuel lines is a no-no. They claim it's to soft to be used as gas line. Unsafe!!

crosley52 8/25/01 1:12 pm

Why would copper be unsafe when a lot of the new cars use plastic???
Fuel Line placement and Filters

flinttim – Winter 2009

My gas line was replaced with rubber, where is the original steel gas line suppose to run? Inside the frame rail, outside? Also where does it come out in the engine compartment and what route to the carb? At what point do you switch to rubber line? Where to put filter would another question.

PhilP – Winter 2009

The original steel line runs inside the left frame rail to a point near (above) the left front motor mount. Flex line runs from there behind the tower shaft housing (between block and tower shaft tube) to the fuel pump. You can use a filter between the pump and carb or down near the frame at the end of the steel line.

Note: filter by motor mount would filter out stuff before getting to fuel pump and be further from the exahust manifold, so less chance of causing vapor lock.