Originally Posted by Dudesky
I'd like you opinion on this, folks.
I bought a can of Seafaom, and I know a couple of you have used it (Catalyst, I think). But I've been leery of doing it because I've heard it can sometimes do more harm than good, if it cleans out the crud in the cylinder walls that is otherwise maintaining a good seal; you could actually lose engine compression, especially on higher mileage cars. I've got 147k on the clock, and my test results a few months ago was 230-230-230-223-224-232. The engine has no known issues, aside from the occasional slight hesitation at low rpm's, which I attribute to mildly clogged injectors. So what do you guys think, should I do it?
There should not be any crud on the cylinder walls. The piston rings will scrape any crud clean. If you loose compression by cleaning your engine, the engine is in REALLY bad shape. Actually having that crud in your engine will cause hot spots and can cause pinging and other rough running conditions. I ran seafoam quite regularly through my old engine and it was clean as a whistle.