[cooperino]

Originally Posted by jerkin

I've used seafoam many times to decarbonize engines, mostly on boats, it works well. I'm hoping my problem was just a dirty intake valve which this product is perfect for. If not I'll have to tear it down in the fall. Sort of amusing how posters on here tend to belittle people when they choose to try the simple fixes first. Not every single problem requires a teardown/rebuild but I suppose if I was a small minded man that thought I was superior to others I might think so as well so it is understandable.

Jerkin,
Seems unless your a Grand member here your posts might be ridiculed. I myself have used sea foam for certain things. Yes it works great for cleaning out gummed carbs on an outboard after its been sitting all winter. I have used it on throttle bodies on older TBI chevys with some success. I think what you might find is that for the issue you described having this may only be a temporary solution. Of course there are several reasons why plugs are fouling. A dirty or poorly adjusted carb can do this but in many cases it is caused but worn internals of your engine. I say if the sea foam is doing the trick for now use a little bit in the tank on each fill up until you have time to rebuild, say after the mowing season. We don't all have multiple machines to get the weekly chores done around the yard. I would suggest a couple of things before you rebuild. 1 do a compression check wet and dry. 2 Check to see if you turn your mixture screw on carb while running does it change idle of engine. Looks like "from the pictures" your plugs are carbine fouled. This usually means 1 of 2 things. 1 rich condition 2 poor/weak spark. Check your wires leading to the plugs. Are they brittle or cracking? In any event if you check compression and its low then you know what you need to do but I would still check these other things first.

Good luck