1988 E-250 Van

dwkkc · #1 (**permalink**) 04-14-2004, 10:08 PM

I have 1988 E - 250 Van with 5.8 EFI engin. I am having problems with my fuel managment system. It started running rich and would have a high idle for about 5 seconds and be fine. The last time I started it up the engin flooded and filled the cylnders with fuel, so bad that It hydrolic the pistons and fuel ended up in the oil. I have replaced the map sensor, oxy sensor and found loose vac line, but it still happens. Any ideas?

c96drumm · #2 (**permalink**) 04-15-2004, 02:57 AM

Check your fuel pressure regulator. Pull the vacuum line to it and see if there's gas in there, which would indicate a ruptured diaphram in the regulator.