Asked by Bernard Jan 13, 2015 at 10:40 PM about the 1998 Ford Expedition 4 Dr Eddie Bauer 4WD SUV
Question type: Maintenance & Repair
engine runs almost normal while idling,but does have a slight misfire or trimble. When taking off from dead stop everything's normal until transmission shifts into high range. Once into high range, stalls and sputters very bad. When idling for more than three minutes, heavy white smoke comes from tailpipe. Checked coolant level , and it was full .
White smoke usually steam indicates a blown head gasket. check for bubbles in radiator when warm, and/or milky oil on dipstick (water present).
Paw_fordman answered 9 years ago
White smoke can also show an overfuel condition with the newer catalyst systems, from the overheating of them, and the resultant water vapor. For sure watch the coolant level, but also check fuel pressure and watch to see that it holds pressure when key is off. As for coolant, look under the oil filler cap, and wipe your finger inside the opening, looking for a whitish yellow milky slime, which point to moisture in crankcase, either leaking coolant, or too many short trips where engine doesn't get fully warmed up. If it has a check engine lamp on, get the codes pulled also.
engine runs almost normal while idling,but does have a slight misfire or trimble. When taking off from dead stop everything's normal until transmission shifts into high range. Once into high range, st...
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