Wrench
Well-Known Member
- Joined
- December 30, 2005
- Messages
- 256
- Reaction score
- 1
- City, State
- Courtenay, BC
- Year, Model & Trim Level
- 99 B4000 4.0L OHV
I have the 4.0L OHV return less fuel system. For a few weeks I had too prompt the key twice to get enough fuel pressure to start engine. Checked with fuel pressure gauge test and it showed poor pressure build up till second prompt hence the engine starting. Changed fuel line filter - no change. Now after running the vehicle for a month the engine now starts on first key prompt. Retested fuel pressure and now get 60 psi, but the kicker is that when key turned off the fuel pressure drops instantly to 13 psi. No hold pressure. The in-tank pressure regulator has worked fine all along.
On this particular return less fuel system is there a check valve in the tank pump? I was going to order a new fuel pump till I found out the price was $600 CAN. I don't suspect any injectors are leaking as I removed the spark plugs and they are all dry and engine runs fine with no CEL's.
On this particular return less fuel system is there a check valve in the tank pump? I was going to order a new fuel pump till I found out the price was $600 CAN. I don't suspect any injectors are leaking as I removed the spark plugs and they are all dry and engine runs fine with no CEL's.