I had an '89 F150 with an inline 6 that stated doing hat in '97. Turned out to be the valve lifters were stuck. I just got some of that engine cleaner that you put in your motor oil and run through the motor for a few minutes before changing the oil. Cleared the issue right up. That motor never ran smoother, haha. That's something cheap you might try, though I make no guarantee it'll work brother.
2001 5.4L Lariat SCab 4X4 Offroad
Last edited by FordmanUGA; 04-26-2012 at 08:07 PM.