1967 Mercury Cougar XR7
You shouldn't have fuel 'vaporizing' in the lines on an EFI car, ever. But the fuel pump has a real problem pulling fuel if there's a restriction in the sock or anywhere else on the 'suction' side. It will burn itself up quickly if starved too, so that's a very serious consideration. It can push against significant blockage, but they don't suck well.So, we're still getting the lack of fuel at wot after warm up. There was a change after we installed the fpv, hasn't died on us yet.
Is there a method I can try to test for fuel vaporizing in the line? We're going to check for a clog in the fuel return line also.
There was a ridiculous amount of rust in the tank when we pick the car up. I flushed the supply line and didn't think to do the return........
My thought is to clean out the tank and put a new sock on first! And completely flush all lines.