Vapor lock 1990 E350 EFI 460 engine?
So about a year ago we were coming back from a 670-mile trip when we had a major overheat condition. We limped home, but I believe the heat damaged some components. I replaced the stock copper rad...
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Do you know for sure the pump is running? Might try changing out the relay for it. They are a known failure point at higher mileages.
Some shops always replace the relay when they replace the pump.
When the in-tank fuel pump burned up 5 years ago, it took out the inertial switch and the relays with it. So the relays have been replaced within the last 5 years.
I don't have a way to know right now if both pumps are running or not. I will be installing a fuel pressure gauge shortly.
When they started to modify fuel that put lots of accumulated junk in the fuel filters. Changing fuel filters isn't expensive and something that the Ford dealer recommended on my 91. Changing fuel filters would be high on my list when it came to anything that appeared to be fuel starvation - not much downside.
Agree. After I get a baseline reading with the stock setup, I'm going to replace the fuel pressure regulator, fuel filter, and high pressure pump.
Steve
