Originally posted by Auto-X Fil:
From my experience, Seafoam does next to nothing on a dirty intake. If there's just a thin film of buildup, then regular use can keep it clean. But once the crud gets built up and caked on, a mist of solvent in the intake won't do a thing.

Imagine your intake is that bowl of oatmeal you had for breakfast. If you walk over to the sink and rinse it out every day, it'll be fine. If you make oatmeal in it every day for a week, you're going to be using a jackhammer to get through the build-up. Sure, carbon deposits don't solidify quite like oatmeal, but it's more similar than you might think.

My experience: I started with a 100k+ mile engine. Looking in through the TB I saw serious buildup on the UIM and TB plate. I ran a can of Seafoam through the taps, and scrubbed the TB with carb cleaner. Looking in again, I saw no difference in the amount of crud. After several thousand miles (6k?), I opened the induction system, and found massive buildup. I soaked the UIM/LIM in Seafoam overnight, and then wiped it off: there was little to no effect. I wiped the TB with Seafoam, and the thin coating came right off. I then soaked the UIM/LIM with B12 Chemtool, and with a little wiping it was spotless.

So this tells me that without serious scrubbing, scraping, and chipping, you can't clean the buildup of many thousands of miles. However, running Seafoam through before each oil change may actually work. Doug (Digital Slacker) is trying this now, we'll see how it works.

So, don't waste your time running it through a dirty engine. You'll only foul up your plugs and oil at worst, and make a negligible difference at best. The scrubbing of a very dirty throttle plate may actually provide a difference in throttle response, but you're not doing a darn thing to the manifolds and heads with this method.





I did a can of seafoam when my secondaries were having problems openning up, and that helped a lot. Def not as clean tho.

99 TRed Contour SVT # 1853 out of 2760 230.2 WHP @ 6500 237.0 WTR @ 2250
Originally posted by MxRacer:
Originally posted by RawBurt:
I'll be keeping it to myself, until the time comes. It'll be hard to find.

much like your weiner.