2003 Ford F150 V8 Two Wheel Drive Automatic 120K miles
A few days ago and after driving through 1' of water puddle, my truck (2003, F-150/4.6) started to run rough - also have a rotten egg smell. For the most part, truck runs good at idle but gets worse when I accelerate. When I accelerate, the engine seems to " bogg-down" but eventually catches-on and smooths out. This also happened a few months ago (but without the egg smell) after a fuel fill-up and I thought I bought bad gas. At that time, I added a higher octane fuel and also changed the fuel filter (filter was not clogged and no water). Within a day, my truck ran great. I don't recall driving through water at that time. No check engine light has come on in either case.
Wednesday, August 27th, 2008 AT 11:40 AM