Quote:
Originally Posted by ProDarwin
I've done this before, only just open the TB by hand and mist the water in with a spray bottle (as I have no spray gun). A guy on a Saturn forum hooked a vacuum hose to a water tank with a small restrictor in it so that the engine would suck in a small amount of water under vacuum. His cylinders/intake manifold are CLEAN.
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Yep. Water is probably the best liquid I know of for use in cleaning combustion chamber surfaces. Doesn't take much, either.
Quote:
Originally Posted by ProDarwin
I've thought about doing something like this, knowing full well it would have no positive effect on fuel economy. The Saturn engine is very susceptible to carbon buildup (especially on the rings), so it may be worth the effort. The potential for added moisture in the oil would concern me though.
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It's not such a big concern. You'd probably do more damage if you did a bunch of drive cycles where your engine wasn't fully warmed up before you shut it down. Whatever water gets caught in the oil will evaporate out.