Thread: HOW TO: cleaning Intake manifold ?

so i made some new egr plates,and whuile putting them on i thought about checking my tb and it was sorta gunky and oily...and inside th egr ports the IM has a nasty LAYER of stuff inside...

any tips like good cleaners?..that will helpl clean it good? i plan on taking the whole IM off to really clean it well..

and i will need new gaskets of course but anythign else? never done this....

SO UPDATE as of 10/26

tools i used:
-12mm 1/4 drive socket with 6inchextension
-10mm
-phillips and flathead screwdriver
-old brass bristle brush(to scrub inside away)
-drill with wirebrush attacment(to clean off manifold before paint)
-hammer(to tap injector bolt loose,and break the manifold seal)

cleaners i used:
-simple green
-brake cleaner

so we start with this...


then i started taking off the injector harness and vaccum lines..
so i took pics of vaccum line before hand...just in case



then onto removing the fuel rail....4 bolts,2 fuel ines to come undone...make sure to remember were they go..under the 4 bolts,each bolt has a plastic spacer that WILL fall out,MAKE SURE YOU SEE THEM BEFORE YOU LOOSE THEM


now you can get the manifold bolts easier without the fuel rail in place..



then onto taking off the bolts....



with a little patience th emanifold should come right off...also helps to bang it around a lil bit...
this is what ya get after it comes off....



well whats that wierd brown spot in the middle you say??????idk lets have a look???


its a port into the egr crap...and IT HAS A HOLE!!!!WTF!!! NOW IVE FOUND THIS HISSING LEAK IVE HEARD SINCE IVE HAD THIS CAR!!!!

the bolt woudlnt come loose at all...so i put some quicksteel to seal it up good...

while the top of the manifold is off...have fun cleaning it all out...the egr on the hiport mani are clogged as expected, and full of gunk and oil...toothbruch and spraycan with the straw are great to use here

while most of debris and oil is found in the collector still attached to the throttle body part of the manifold...thats where most of the real stubborn oil is..after i cleande both sides,in and out,top and bottom of the manifolds i decided to paint it to make it a lil cleaner...

painted


now put it back on.....


once it back on and tightened,put the fuel rail back on opposite of how you took it off....


connect fuel lines,vaccum, and my egr plates...



the put all the crap away.....

get it hot tanked at a machine shop or place that does it. cost me 50 to do my whole motor and it came out squeaky clean

I used brake cleaner with good results.

theres a cleaner that you can get at the dollar store called LA awesome. Use it.

DESTROY egr!

I was thinkg that would work, then it seemed to harsh?? But I will try it..



I read that from the other thread with somones build... Can't beat a dollar...


I don't think the fuel rail and injectors are gonna come out easy for me....I just have thisfeeling...any tips for removing the manifold on a hiport??

Brake cleaner and carburetor cleaner are both excellent for the job, neither are too harsh. It's just some aluminum parts you're spraying.

I was worried about the rubber o-rings (injectors) so I soaked an o-ring in brake cleaner to see what would happen. It soaked up some cleaner like a sponge, expanded and deformed. After letting it dry out it shrank back to it's regular size and shape, and seemed no worse for the wear (stretchy as ever, not brittle, etc.).

Fuel rail shouldn't be too difficult, especially on a highport. Just watch out as there are little plastic spacers between the rail and the mani that like to fall out and get lost in the engine when you take the fuel rail bolts out. If you plan on taking the injectors out of the rail, I suggest using this and then replacing the screws with bolts to make the job easier next time. Please keep a good record of what you did and post up in the "how to". I'll try to follow your example later!

That's sortbof what I was worried about the cleaner being to harsh...but should be damn cleen after...





That tool would be great to use. I've never seen anything like that..I'll try to make a how to... Well see how it goes, just looking for a DAY that's not shifty out to get the work done..