Hi I'm new my new is Chris

[cj.handymanservice]

Hi I'm Chris and I have a 1993 Ford Explorer XLT and I think my fuel pressure regulator is going bad, but I have had others say they think it's the timing. I took a toggle switch and placed it between my relay for the fuel pump and the fuel pump to test my theory and it seems to me that when the fuel pump kicks on it just keeps pumping steadily until it will cause a vapor lock situation, is what I think is going on. Before I put the switch on there I could spin the engine over constantly and it wouldn't crank but after a few revolutions it would sound like the timing was off because it would start acting like the starter was dragging. Now that I have the switch on there once I start turning the engine over I will cut the pump off for a few seconds then cut it back on for a couple of seconds and the truck will actually start up as long as I do this so am I thinking right and my fuel pressure regulator is bad?

 

[BrooklynBay]

Welcome to this forum! Check the fuel pressure with a gauge.

 

[cj.handymanservice]

Welcome to this forum! Check the fuel pressure with a gauge.

I tried to check it with one of the universal fuel pressure guages and it blew the line off so like I said I'm pretty sure it's not supposed to be getting enough pressure to blow a factory crimp on a pressure guage off like that. The guage went to 120 psi but it didn't go that high but it was well over 50 psi when it blew off

 

[BrooklynBay]

Replace the fuel pressure regulator, and check the vacuum line connection on it.

 

[Mike65]

Welcome Chris.