74 1.8L L jet.

[sixbanger]

So I've been trying to get the car to run. Yesterday I discovered that my new fuel pump is not working. I took it back off and was looking at the fuel lines ( new stainless lines to the tank and up from the pump to the engine} I do have power at the plug and I also put 12V to the plug and it still won't work. One lines is bigger then the other I then looked at the pump and all the ports are the same size. So I was wondering if I had it hooked up wrong if it would starve the pump and burn it up. Why is the one ling bigger than the other??

[Dave at Pelican Parts]

The larger one is the supply line. I suspect it is larger specifically to denote that it is the supply line. It gets converted down in size before it connects to the pump, either by a "big-little" fuel filter or by a hose that has a larger ID on one end and a smaller one on the other end.

I do not believe that you would burn the pump out by running it with the hoses hooked up backwards, unless it was completely dry and you ran it for minutes in a row and overheated it.

--DD

[ClausGraf]

This is what my 74 pump looks like.