Has anyone ever heard of this? When I worked at a service station at the age of 17 a mechanic did this on every tune up and swore by it. The customers would watch as he poured water down the carb while reving up the engine and a cloud of smoke would come out the exhaust. The engine would run smoother after doing this procedure but I've never seen it done again. Mind you they were carburated , not fuel injected cars that he tried it on.



http://tinyurl.com/yvwzfx

Yep, heard of it, never tried it. It was years ago on carbs, as you said.

i know some of the saturn guys do it to steam clean the engine internally, supposedly it works very well

Yeah...this is basically the same as seafoam just cheaper and alot less effective. Do be aware, that its also a damn good way to hydrolock an engine if you do it too fast, and if you do that, HAH, you be screwed.

seafoam is better, through a vaccuum line...slowly.