marky_mark
New Member
- Joined
- Nov 7, 2015
- Messages
- 5
- Reaction score
- 1
- Points
- 3
- Vehicle Year
- 1986
- Make / Model
- Ford
- Transmission
- Manual
The other day i went out to start my truck and noticed that the fuel pumps came on and stayed on rather than shutting off after a few seconds. It turned over but would not fire. After a few times of turning the key on and off while my dad was out there with me trying to diagnose the problem, it finally did fire up but ran horribly as if there were a vacuum leak (i have a vacuum/boost gauge and it normally runs at 20 for vacuum but was running at about 10-12). I got under to hear if the fuel pumps sounded odd, and the high pressure pump has a little bit of a chatter to it. After doing a fuel pressure test just with key on, it was at about 38 psi. My thinking is that the high pressure pump is either on its last leg or is failed and the in tank pump is doing all the work. Anyone have an idea of what it could be? Any help is appreciated.
Its an 86 ranger 4x4 with the 2.9.
Its an 86 ranger 4x4 with the 2.9.