Originally Posted By: maverickfhs
Originally Posted By: Dyusik
I do on my IS. I don't "seafoam" it, I spay the valve stems down with it, and let it soak a couple hours. Once you see the results, you will not think twice to do it again. That stuff works great.
Could you please share the procedure?
Originally Posted By: racin4ds
Originally Posted By: Dyusik
I do on my IS. I don't "seafoam" it, I spay the valve stems down with it, and let it soak a couple hours. Once you see the results, you will not think twice to do it again. That stuff works great.
I'm curious as to how you're doing this and how often? I assume you pull the entire intake manifold assembly off to get right to the valves?
I have to pop off the upper intake manifold to get a clear shot at the valves, 20 min worth of moving hoses and removing plastic components. The closed valves get a much better cleaning. I just drive it until it is good a hot, get the upper intake manifold off, and just spray at the valves until the stuff pools in the ports. Give it a squirt here and there for the two hours worth of soak. Once the time passed, you can see the buildup reduced on the stems. Re assemble, drive until the gunk is done smoking, dump the oil, and be happy. Nothing complicated, really. Doing so I used a half of the can, and was not shy to get the stuff in there, so 8(?) bucks per cleaning is not a biggie.
From the looks of the conditions of the valves, I'd say it should probably be done at sub 30k intervals, but that's my car, pre catch can, and God knows if the valves were new or cleaned, and how well they were cleaned during TSB work. I'm planning to give it a looksee in 15-20k, and adjust fire from there.