Blue_Oval_Ford
Well-Known Member
- Joined
- July 11, 2004
- Messages
- 149
- Reaction score
- 0
- City, State
- California
- Year, Model & Trim Level
- 1997 Explorer Sport 4X4
I was helping my friend with his F-150 which has devoloped a rough idle and lack of power. We changed the spark plugs/wires and noticed that the passengers side plugs looked like they were not firing. Checked intake manifold gaskets and coil and all or ok. What I do hear is a rattle/knock coming from the number two and three fuel injectors. we did a fuel pressure check and at idle with vacuum hose connected pressure was 32 psi, and FPR unplugged was 40 psi. The FPG fluctuated when we disconnected the vacuum hose about two numbers, otherwise system pressure held steady at 32. We really need help solving this
