Engine cleaning, opinions Options

[92-gt]

Ok, so I am needing to clean the engine in my ST.

I need to clean it inside and out.

When I took off my throttle body, I noticed quite a lot of carbon, so I can just imagine what the intake manifold etc. look like.

Also, it has a leaky valve cover gasket(new one is on its way), and it has 190k miles on it, so it needs a good cleaning.

What do you use for cleaning the engine, such as purple power etc.?

Also, what do you recommend for cleaning the inside of the engine? I have heard mixed reviews on stuff like seafoam, b12 chemtool, etc.

What do you guys recommend?

[stephen_lee]

just run good oil in it. cleaning this old of an engine might have bad effects (leaky seals, oil burning. cleaning away deposits keeping your oil in its proper place) which is why you hear bad things about seafoam and stuff.

what i do to clean the engine is buy some armor all, and go to the car wash, using the "tire && engine cleaner" or "bug remover" w/e its called there but its green, i spray the engine down really good, let it soak for a while, then spray it again, then switch over to high pressure soap, spray away at everything you see dirty, then rinse w/ the "wax" stuff. then you get the armor all and spray the WHOLE engine/bay/hoses down really well w/ the stuff. close the hood, and drive away. you will probably have a misfire, but it goes away in like 5 min of driving.

don't speay the distributor w/ any pressure. and i'm not responsible if you manage to mess something up., though i've done this for 3 years on 2 different celicas w/o an issue