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Old 07-30-2003, 12:43 AM   #1
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Default cleaning engine internally

Have any of you poured Sea Foam in through a vacuum line, or the PCV valve on yoru car? Does it really clean the engine out as good as I've heard other people claim? Also, is it bad to use intake cleaner on a supercharged car? I don't really know what the supercharger is like internally, so I don't want to use intake cleaner if there are bearings or somethign that are going to get messed up by cleaning out the intake.. One last question, how the hell do you get the MAF sensor off? It looks like you need a TORX bit, but it has a little nipple in the middle of the bolt.. I've never seen this! I have to remove the MAF sensor to clean the intake.. argh. what a pain. lol. I've just been using Marvel'* mystery oil for now.
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Old 07-30-2003, 03:13 PM   #2
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Default Re: cleaning engine internally

Quote:
Originally Posted by Custom88
Have any of you poured Sea Foam in through a vacuum line, or the PCV valve on your car?
Oh, Lordy...

Quote:
Does it really clean the engine out as good as I've heard other people claim?
That depends... how could those people determine their fantastic results in the first place, if they're not opening up the engine for a look-see? And if they do open it up, they're almost certainly going to clean it while it'* apart anyway.

Quote:
Also, is it bad to use intake cleaner on a supercharged car? I don't really know what the supercharger is like internally, so I don't want to use intake cleaner if there are bearings or somethign that are going to get messed up by cleaning out the intake..
Be guided by what the cleaner manufacturer says on the can, as well as what Pontiac says in the service manuals.

The bottom line here is: What problem are you trying to correct, exactly?

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One last question, how the hell do you get the MAF sensor off? It looks like you need a TORX bit, but it has a little nipple in the middle of the bolt.. I've never seen this!
Haven't noticed it myself but from your description it sounds like a "security" bolt. Wrenches for those things are available via Sears Craftsman tools, among other places.
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Old 07-31-2003, 01:26 AM   #3
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Default

Spray a fine mist of water into the intake very slowly, it kinda steam cleans the inside. You will want to remove the MAF sensor before doing this because it uses a "hot wire" so spraying it isn't very good. Best option I've heard is GM Top end cleaner. Check it out

http://www.sytyarchives.com/howto/vi...php&dir=engine

http://www.corvetteforum.com/techtip...=212&TopicID=1

or if you're really feeling crazy:

http://www.fbody.com/members/stevenm...ne_cleaner.htm
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