Ford Expedition Problem Report

Ford Expedition Engine is knocking loudly, and truck is hesitant to drive

(10 reports)
While driving for about 30 min, my engine began to knock loudly and began to experience and very rough idle. It is very hasitant to drive and comes really close to cutting off when I come to a complete stop. I check the engine oil and it is good. However, I did put about a quarter tank of 87 unleaded gas in there this morning from a low-priced gas station so maybe that has something to do with it. -
Loud knocking sound from motor after spark plug changed. I had rough idle issues as well as hesitation and stalling out.still have problem -
Used 2 bottles of heat and drove around sloshing the fuel tank to mix the additive with the fuel. Took a couple days to clean up. Most likely water in fuel. -
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