I was wondering if somebody can help me I have a 1968 Buick Skylark everything is stock I am looking for a new sending unit I am on opgi they have a sending unit with a return and they have one without a return which one will be the proper one to purchase
I am no expert, but when I replaced mine, I was told that the one without a return line is for cars without A/C, such as my Wildcat. The return line units were used with A/C cars. I am sure if I was mis-informed, someone will be along to help. All I can say for certain is that mine had no return line and I have no A/C.
Just look at your current pump! Does it have 2 lines going to it or 3 which would mean you have a return line type fuel system.
Better to have something and not need it, then to need something and not have it. You can always cap off the unused return. The return line can help with vapor lock with a hot running engine whether it has A/C or not. https://www.rockauto.com/en/catalog...+v8,1022870,fuel+&+air,fuel+sending+unit,4436
Yes. ^^^ Adding a return line is very simple, since it is low pressure, any ethanol rated line will work, even with EFI, and with todays korn likkur gas, no real downside to doing it.
