Universal Atomic Fuel Return Lines?

[gkate224]

I have a Universal Atomic 5424 (3-cylinder) auxiliary and I need to replace the fuel return lines that goes between the aft injector back to the fuel tank.
Does anyone know if the return circuit is high pressure or can I use the low pressure 3/16" fuel line from the auto parts store?

 

[cjm1]

I have a Universal Atomic 5424 (3-cylinder) auxiliary and I need to replace the fuel return lines that goes between the aft injector back to the fuel tank.
Does anyone know if the return circuit is high pressure or can I use the low pressure 3/16" fuel line from the auto parts store?

 

[cjm1]

I have the 5432 which is same base and the fuel return to the tank is a non pressure line. It just bleeds excess back and I have some kind of flex line. Auto supply store would be just fine.

 

[dlochner]

Don't use the auto parts store line. Fuel lines should be non-permeable, i.e. they should not leak fumes and need a higher level of fire retardant due to the enclosed space they live in. Only use USCG approved lines. A bit more expensive, but safer.

Sure, you might get away with using cheaper auto store line, however, if there is an issue and the insurance company gets involved or a surveyor notes it in a report it will make life more complicated.

 

[Barnacle Bill]

It's the low pressure side, but you need an acceptable fuel line. For diesel it is Type B1 which is recommended by ABYC. Type A1 for gasoline fuel lines.