RS4 Carbon Buildup Removal - Anyone have any tips? Best products? Good DIY?

B6/7 S4/RS4
#33

It worked really well. I sprayed it on and let it sit for about 2-3 hours and it basically liquidated the carbon. After paper toweling it out, there wasn’t much left.

There were some carbon bits left on the edges of the valves which I got to with the bunched zip ties. Then soaked for another hour in carb cleaner and soaked it up.

The carbon bits are gone but it has a slight brown/yellow tint still. I guess that will have to do. Going to do the other three valves tomorrow.

The cleaning part is a million times more enjoyable than the manifold removal. The rest of the bits were off in about two hours but that bottom bolt on the oil separator took me a good part of an hour more.

Also broke one of those breather(?) hoses that plugs into the heads. Snapped it by the Y connection where it’s a plastic hose.

Bit of a bummer since that’s going to cost around $370 here. Not sure what other fixes there are for it. Electrical tape seems pretty temporary.

Other than that, no other casualties other than a stripped IM bolt and a cracked vac hose + T-barb at the front of the IM.

#34

Electrical tape sucks, but here is something similar you could try.

http://www.waytekwire.com/item/20890/SELF-FUSING-SILCONE-RUBBER/

This basically fuses to itself. We use it all over aircraft to repair wire harnesses. It really holds up and may save you a few bucks as long as the line is easy to get to.

#35

Electrical tape sucks, but here is something similar you could try.

http://www.waytekwire.com/item/20890/SELF-FUSING-SILCONE-RUBBER/

This basically fuses to itself. We use it all over aircraft to repair wire harnesses. It really holds up and may save you a few bucks as long as the line is easy to get to.

#36

Thanks for the tip!

I’m going to carefully slice the plastic accordion hose off and use a rubber hose in it’s place (as suggested by Dan@JHM).

I’ll take some pics once done.

#37

Thanks for the tip!

I’m going to carefully slice the plastic accordion hose off and use a rubber hose in it’s place (as suggested by Dan@JHM).

I’ll take some pics once done.

#38

Snap a pic of the piece you broke…I removed a bunch of that crap and still have it all in my garage…

#39

Snap a pic of the piece you broke…I removed a bunch of that crap and still have it all in my garage…

#40

If you can please post pictures of the broken parts? I’d like to know what to watch out for. I know the RS4 is slightly different. I’d still think it would be helpful.

#41

It’s basically this piece (Thanks NY07RS4 for the pic)

http://i.imgur.com/c0IJ0BR.jpeg

And I broke it exactly where Tony broke his recently:

http://audirevolution.net/forum/index.php?topic=2444.msg67480#msg67480

The interesting thing is if you look at the diagram and draw a line straight up from the “18”, the part from where it intersects that line right to the Y peice is plastic. The piece that goes over the fuel rails and bolts at one spot on the TB is metal. Then the rest of it is plastic where it connects back to the engine.

I took a blade and sliced off the plastic hose piece leaving the original tips on both the metal end and plastic ends at the Y.

I picked up a foot of 3/4" heater hose for a buck and it fit perfectly.

http://www.imgur.com/PqQpzqQ.jpeg

I’ll take some more pics of it fully installed once I get the car back together (waiting on some injectors).

#42

If you can please post pictures of the broken parts? I’d like to know what to watch out for. I know the RS4 is slightly different. I’d still think it would be helpful.

#43

waiting on injectors? Don’t ask BEnSTi or meem or jasonamd where to find them on the cheap :slight_smile:

#44

It’s basically this piece (Thanks NY07RS4 for the pic)

http://i.imgur.com/c0IJ0BR.jpeg

And I broke it exactly where Tony broke his recently:

http://audirevolution.net/forum/index.php?topic=2444.msg67480#msg67480

The interesting thing is if you look at the diagram and draw a line straight up from the “18”, the part from where it intersects that line right to the Y peice is plastic. The piece that goes over the fuel rails and bolts at one spot on the TB is metal. Then the rest of it is plastic where it connects back to the engine.

I took a blade and sliced off the plastic hose piece leaving the original tips on both the metal end and plastic ends at the Y.

I picked up a foot of 3/4" heater hose for a buck and it fit perfectly.

http://www.imgur.com/PqQpzqQ.jpeg

I’ll take some more pics of it fully installed once I get the car back together (waiting on some injectors).

#45

waiting on injectors? Don’t ask BEnSTi or meem or jasonamd where to find them on the cheap :slight_smile:

#46

Any time Mistro!

#47

Any time Mistro!

#48

Hmm…neither of those tools look like they will provide the necessary clearance but it is tough to tell from the pictures, especially for the 2nd one.

I will say this, even if you get the Craftsman piece, wrap your bit one time with electrical tape or something to really get it snug in the actual handle. The magnet force simply isn’t strong enough otherwise. I couldn’t find it in store either but was able to buy it online and then have it shipped to my local store. I think it was part #7475 but that is not coming up with anything on their site any longer.

And funny enough, this summer Costco carried a micro ratchet driver set for pretty cheap that would definitely work. I remember seeing i and thinking it would be PERFECT for IM removal. I just tried to google it and came up with some other options that look like they will work for you. In fact, I think any of the below will work fine.

http://www.amazon.com/Neiko-03044A-Ratcheting-Screwdriver-Close-Quarters/dp/B000XYOUS6
http://www.amazon.com/Great-Neck-51063-Ratchet-10-Piece/dp/B001NCEXGG
http://www.thetoolwarehouse.net/p-6868-mini-ratchet-and-bit-set-38-pc.aspx

#49

Hmm…neither of those tools look like they will provide the necessary clearance but it is tough to tell from the pictures, especially for the 2nd one.

I will say this, even if you get the Craftsman piece, wrap your bit one time with electrical tape or something to really get it snug in the actual handle. The magnet force simply isn’t strong enough otherwise. I couldn’t find it in store either but was able to buy it online and then have it shipped to my local store. I think it was part #7475 but that is not coming up with anything on their site any longer.

And funny enough, this summer Costco carried a micro ratchet driver set for pretty cheap that would definitely work. I remember seeing i and thinking it would be PERFECT for IM removal. I just tried to google it and came up with some other options that look like they will work for you. In fact, I think any of the below will work fine.

http://www.amazon.com/Neiko-03044A-Ratcheting-Screwdriver-Close-Quarters/dp/B000XYOUS6
http://www.amazon.com/Great-Neck-51063-Ratchet-10-Piece/dp/B001NCEXGG
http://www.thetoolwarehouse.net/p-6868-mini-ratchet-and-bit-set-38-pc.aspx

#50

Thanks I ended up picking this thing up from princess auto

http://www.imgur.com/sZ4CvwH.png

It was a tight squeeze but it fit

http://www.imgur.com/kVjsz18.jpeg

#51

Thanks I ended up picking this thing up from princess auto

http://www.imgur.com/sZ4CvwH.png

It was a tight squeeze but it fit

http://www.imgur.com/kVjsz18.jpeg

#52

Hey I got the same tool from princess auto. Seemed to do the trick.

Man it sure isn’t easy (at least for me) to get some of those hidden bolts off…

So I have my manifold off now. Soaking some stuff in seafoam, but planning to get some easy-off next… I’ve looked at a lot of pics, but mine seems really bad, carbon build-up wise…

Somehow when I removed the manifold I broke a part - its a part with the o-ring that inserts into the air intake on the manifold, with the contoured end to match the side of the air-intake. I somehow broke off the part that inserts. Does anyone have a part name or number for this, or where to get it or any other ideas?

I was thinking of taking the manifold to a local shop to get cleaned and ported, I figured why not seeing that I have it removed - any pros or cons or tips I should know about?

Planning on getting some McDonalds straws tomorrow for the shop-vac. Not sure what is best for doing the cleaning, I have a dentist tool, toothbrushes, some popsicle sticks…?

Thanks in advance, I’m sure I’m going to have more questions…