Lee Green

Used sea foam in full tank of gas now when idling engine idle goes up and down and now the engine stops running,have run a full tank of gas through,no changes. Thanks

white89gt

01-7700

There's a youtube video where a guy answers the question - will an engine run solely on seafoam? Answer, yes but very poorly and at almost full choke and lots of smoke.

MyNameIdeasWereTaken

From my experiences with sea foam, if you run it through the tank on a regular basis since the car/truck was new, it helps keep things clean.
But if you run it through your tank after many years/miles of never using any clearers to fuel additives, you're only going to dislodge gunk and risk having that clog or damage components further down stream.

I'm still learning about these trucks, but I would be curious if your problem is with fuel delivery. Perhaps your filter or fuel lines are now clogged, or sludge in the gas tank got dislodged by the sea foam and has jammed your pump.

mjille

Any check engine light or stalling at idle?