Possible Causes
WARNING: This page does not describe the selected car, but rather 9 other vehicles, including the 2003 Ford RV Cutaway, 2003 Ford Pickup, 2003 Ford F550 Super Duty, 2003 Ford F450 Super Duty, and 2003 Ford Excursion. However, it is still accessible from the selected car via links, so may be relevant.
- Extended oil drain intervals; anti-foam additives in oil may be depleted either from severe use or extended service intervals.
- Air may be present due to recent engine repair on injection control pressure system. It may be necessary to run vehicle aggressively for 15-20 miles to remove air.
- Wrong type or grade of oil.