2001 Ford F150 Ext cab with 5.4L v8, 86,000 miles
When starting after not using over the weekend, engine runs very rough and vibrates.
It will eventually smooth out after revving in Park. When put into drive rough engine vibration returns.
Driving for a few miles and it seems ok. Seems to increase also when damp or left out in rain.
Driving every day it doesn' happen. I have been adding gas treatment and injector cleaner alternately to each fill-up for several months.
have the same problem?
Wednesday, April 13th, 2011 AT 3:50 PM