Has anyone ever done an EGR deep clean?

Post by **Merlin** » Wed Jun 17, 2015 2:49 pm

Has anyone ever done an EGR deep clean? ie actually got into the EGR intake manifold chamber to clean it out? It is easy on the ATR as the chamber is accessible since there is plate bolted on to the top of it, but the Preludes chamber is only accessible through a series of plugs. Has anyone ever removed these plugs?

Like this writeup? http://www.preludepower.com/forums/show ... p?t=275440

Does our H22's even have these plugs? Lings does not recognise the part number in that thread.

Post by **Merlin** » Wed Jun 17, 2015 3:13 pm

Merlin wrote:Does our H22's even have these plugs?

Just been out to the car, yes we do, my H22a8:

Post by **Drax** » Wed Jun 17, 2015 3:14 pm

I think ill have a look at these on one of my inlets later on, be interesting to see what they are like

Post by **Merlin** » Wed Jun 17, 2015 3:15 pm

CARRisma wrote:I did this job on 01/06/13. There's many write-ups on the internet, mainly from America, which recommend a slide hammer for pulling the plugs. I haven't got one so after drilling holes in the plugs then screwing in a self-tapping screw, I yanked the phuckers out with a claw hammer. Simples. After cleaning out the ports and the EGR valve with carb cleaner spray and a wire coat hanger, I plugged the ports using M10 BZP nuts. As they were 20mm long, they where trimmed down to about 7 mm ish as to not obstruct the ducts inside. They were sealed in place using Loctite 5910 Premium Black Silicone Gasket Maker/Sealant.

Also, I've seen write ups that recommend removing the IACV and fuel pressure regulator. I didn't find this necessary at all, but did disconnect the fuel pipe which connects to the fuel rail so I can get easier access to the last two ports.

I've seen many examples on the internet where the ports were completely clogged solid and that is what I expected mine to be like, but rather surprisingly, the weren't. My car had done 124,895 miles when I did this a week and a half ago and the EGR valve wasn't too bad either.

So here's the way I did it:

1 ) Centre punch plug.
2 ) Drill small hole in plug, While drilling, use a vacuum cleaner to clear away the tiny bits of metal.
3 ) Screw in self tapping screw.
4 ) Pull out with claw hammer.
5 ) Using the vacuum cleaner, suck out the tiny bits of metal from the port which came from the drilled plug.
6 ) Repeat steps 1-5 for other 5 ports.
7 ) Scrape out crap with wire coat hanger or something similar. You'll be able to feed it through the ducts if they're clear.
8 ) Blast out crap with compressed air (I bought an "air duster" from Staples for less than £5).
9 ) Clean out crap with carb cleaner spray.
10 ) Repeat steps 7-9 until you're satisfied.
11 ) Seal the ports using M10 nuts and high temperature sealant.

When I say "I did it", it was with help from my dad Obviously, the engine will be a little reluctant to start straight away after this but once it's running, it will be fine.

Work in progress:

Finished:

http://www.ludegeneration.co.uk/honda-p ... t7667.html

Post by **Merlin** » Wed Jun 17, 2015 3:18 pm

After finding CARRisma's writeup I am deffo going to go this. My car is 119K miles now so no doubt it is rammed full of crap.

Post by **Lude-dude** » Wed Jun 17, 2015 3:34 pm

only have these on 5th gen manifolds

if my memory is correct

Post by **Merlin** » Wed Jun 17, 2015 3:37 pm

Yup. In the thread I quoted CARRisma Nafeman shows the differences in the intake manifolds of 4th and 5th gens.

I have gone for internal drive dome hex M10 bolts for a slightly cleaner look than a regular bolt head.

jsalas623 · Post by **jsalas623** » Wed Jun 17, 2015 4:31 pm

Heres a quick write up: http://www.preludepower.com/forums/show ... p?t=275440

Also the easiest way to take out the plugs was to drill a hole and use a tap to get it out. I tried a slide hammer and was too hard.

Supercharged 無限MUGEN BB1 Profile · Post by **nucleustylzlude** » Wed Jun 17, 2015 4:32 pm

Nailed it!

Post by **Merlin** » Wed Jun 17, 2015 4:33 pm

Is that a deep deep clean?

jsalas623 wrote:Heres a quick write up: http://www.preludepower.com/forums/show ... p?t=275440

In the first post bud

We cannot get hold of the plugs in the UK, hence the use of M10 bolts in the writeup by CARRisma.