I have a 1993 yj 2.5 auto. The other morning I went to start it and while the engine will turn over, it would start for about three seconds and then die. I fully charged the battery. Then I checked the fuel pressure at the rail and it showed zero, except that it blips up to around five while I’m turning over the key. The fuel pump is cycling on (I can hear it). I checked the relays for fuel pump and auto shut down, as well as the fuel system fuse and they all were good. Previously a few years ago I also had my PCM rebuilt so I don’t actually suspect that. Here’s where it gets a bit funky. I started by replacing the fuel pressure regulator and the gasket on the nipple of the old fuel pressure regulator stayed inside the rail so when I put the new pressure regulator on there, there was a small gap. I then went to start my vehicle and fuel shot out like crazy. This tells me that plenty of pressure is coming right to the point of the start of the fuel rail. Does anyone have any suggestions on what to check next?
No AI answers or guessing by keyboard warriors please.
No AI answers or guessing by keyboard warriors please.