Benefit in cleaning intake manifold?

[Spetz]

Would there be any noticeable difference in cleaning out an intake manifold?

This is what mine looks like:

 

[CharBaby]

I can't tell from the pics if the manifold of off the car or still on the engine! Certainly, if the manifold is off, clean it.

 

[hpb]

Since you've got the upper half off, why not give it a clean - I find brake cleaner works well. Obviously you'll do the throttle body too. As for the lower section, I wouldn't go removing it just for the sake of cleaning, and I wouldn't clean while it's still on the engine. So I'd leave it as is.

Hope you're changing the rear spark plugs while you're in there!

 

[Concours14]

Rather...fluffy in there. I'm curious, prior to this disassembly and discovery, have you ever done any of the Seafoam or other "rinses" on this? I suppose I can assume mine is "fluffy" with deposits at 124K. Without any dismantling, anything I should or can do about it or just leave it be if I'm of no mind to disassemble? Thanks for the pics..

 

[ARB1977]

Once you get it clean I would look into a oil catch can.

 

[Spetz]

The manifold is off the car. As is the lower part as I am changing injectors too.

Is it worth the hassle though?
Will there be a difference other than me knowing it's clean?

 

[barkingspider]

Since its off, clean it as best u can but I would not make it a major project. Maybe spend an hour or so on it. Berrymans chemtool worked a whole lot better than brake cleaner or everything else I tried. When I cleaned the the manifold on my beater car, the only difference I noticed was in my head, ha.

 

[Kestas]

I'd use Castrol Superclean, a lye-based cleaner. Just don't go soaking it overnight as it can attack the aluminum.

 

[hpb]

Since it's already off, sure, clean it up. As others said though, I wouldn't go making it a major project. And sad to say, but yep, the main difference will be in the mind - but hey, do it once, do it right. Mind you, you've gotta draw the line somewhere..."Since I'm this far into it, I might as well pull the heads for new guides and seats..." Or maybe that's just me! Nice to see you doing a thorough job and breathing new life into the old girl.

 

[Falcon_LS]

If you have the time, soak it in something like kerosene over night and use a can of thottle body cleaner after. Won't make a huge difference, but since you've pulled it off - go ahead and clean it as best you can. Get a new set of gaskets while you're at it.

As I've said before - an inline oil separator is a worthwhile investment for this application.