4.9L Engine sputters and looses power when accelerating. Idles smooth. Fuel pressure about 55 psi running and about 62 psi not running. Changed fuel filter. Replaced EGR, Fuel Press regulator, IAC, plugs, wires, rotor, cap. Idle vacuum holds at 20 in-Hg at idle.
Any ideas on what else to check or change??
Just to clarify for some "old timers" the engine is the 300 cid inline 6 cyl.
Thanks for the info kocky!
The engine acts like it is running out of gas. Which is why I checked the fuel pressure. It also does not run well at highway speed.
Any ideas on what else to check or change??
Just to clarify for some "old timers" the engine is the 300 cid inline 6 cyl.
Thanks for the info kocky!
The engine acts like it is running out of gas. Which is why I checked the fuel pressure. It also does not run well at highway speed.