I recently removed intake mani to replace glow plugs while doing a frybrid install. When I removed intake mani I couldnt believe what I saw

Black gunk on everything in there. Heres a pic --



I tried to clean it but its everywhere - all over the valves, down all the intake runners. Im shocked this car still runs so well - there must be 1/8" build up on everything! Now I know where all that black soot comes from when I floor it

Is there a product I can use like seafoam to clean this ?

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Paul
Benz-less
I need an SDL !

That's pretty typical for an intake manifold, especially if your EGR is still hooked up. I think if you really want to clean it good, you should take it to a machine shop. You may be able to get away with soaking it in B100 for a night, though not really sure how much additional scrubbing you'd need to do.

I'm going to be pulling my IM off pretty soon too, looking forward to seeing the nastiness inside.

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-justin

1987 300TD, 1987 300TD
2008 R32, 2000 Passat Wagon

FAR too dangerous. Remember, the SF will be additional fuel so the motor will free rev on its own, you won't want a runaway 603 and have it blow up on you.

Just get out what you can with a stiff brush and motor on.

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I'm not a doctor, but I'll have a look.

'85 300SD 245k
'87 300SDL 251k
'90 300SEL 326k

Six others from BMW, GM, and Ford.

Liberty will not descend to a people; a people must raise themselves to liberty.[/IMG]

I wouldn't worry about it, just give it some Italian Tuneups and keep on chugging.

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'81 MB 300SD, '82 MB 300D Turbo (sold/RIP), '04 Lincoln Town Car Ultimate

Sooner or later every car falls apart, ours does it later!
-German Narrator in a MB Promotion Film about the then brand new W123.

What is a Italian Tuneup?

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190D 1985 254,703 Miles as of 3/25/2007
Bought her on 10/4/2006 with 241,132 miles

A search can reveal this. http://www.peachparts.com/shopforum/search.php?searchid=1040299

When you have a million things going on and it's mentioned in the topic i think it's safe for someone to tell me what the heck it is.

The serach almost never turns up any useful info for me.

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190D 1985 254,703 Miles as of 3/25/2007
Bought her on 10/4/2006 with 241,132 miles

Here's the thread on it - basically it's just fun driving

http://www.peachparts.com/shopforum/showthread.php?t=84674&highlight=italian+tuneup

John

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John Hughes, was in Landstuhl, Germany but currently in San Antonio, TX


1978 280CE Astral Silver now 59,xxx miles and counting "Silber-Kugel"
1986 300E Black Pearl Metallic 143,xxx miles 5-spd daily driver w/ blk leather "Schwarz-Schönheit"
1989 190E 2.6 (euro) 5-spd Desert Taupe 112,xxx kms Had to leave behind in Germany!!! "Helga"
1983 300D Pastel Beige now 312,xxx + miles SOLD

OBK#24

You can soak overnight in a tub of B100, B20, or regular D2 and most of it will simply flush out. You can then use a flexible bottle brush or small wire brush to reach most of the other areas. For the stubborn stuff deep inside you can't reach with a brush, spray brake cleaner works pretty well - spray the inside liberally and let it soak for a while, then flush out. Your call as to when you reach the point of diminishing returns!

The big thing to worry about is any sensing connections off the manifold - overboost sensor, pressure port for alda, etc.. Pull these off and make sure they're cleaned out and open.

As far as the intake runners inside the cylinder head on the engine, I definitely agree not to try any chemical cleaning. If there are big chunks hanging that look like they'll be sucked inside a cylinder and cause problems, definitely get rid of those. Otherwise, most I'd dare attempt would be to stuff a shop towel down inside the runner (to prevent any crap from dropping down thru an intake valve into the cylinder), a light brushing to get rid of the worst, and blow out GENTLY with low pressure air before pulling the shop towel back out.

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Just say "NO" to Ethanol - Drive Diesel

Mitchell Oates
Mooresville, NC
'87 300D 212K miles
'87 300D 151K miles - R.I.P. 12/08
'05 Jeep Liberty CRD 67K miles
Grumpy Old Diesel Owners Club

See current thread "uh oh"......

SB

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Diesels:
'85 300D, "Max, Blue Benz", 155K, 27.0 MPG
'84 190D 2.2, "Eva, Brown Benz", 142K, 40.2 MPG
'77 240D (parts car)
'67 Eicher ES 202 Tractor "Otto" (2cyl, Air Cooled, 30HP)
Gassers:
'94 Ford F-150, "Henry", 170K (300 Six) 17.5 MPG
'85 190E 2.3, 148K....Parts Car
'58 Dodge W300M Powerwagon (Flat Fenders) Less than 10 MPG

Drive it like you stole it.

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Geotiger

'85 300D Turbo MB

If you really want to tune it italian style, you've got to get it at a pretty high RPM and keep it there for a little while, then let off, then stomp on it again. Driving it like you stole it will only get you so far.

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-justin

1987 300TD, 1987 300TD
2008 R32, 2000 Passat Wagon

OK thanks...man I was worried the engine was going to die on me.

That pic is not the IM, its the head looking down into cylinder with IM removed. If I did brush that out it'd go right into cylinder...prob not good thing. I left it as is, engine seems happy enough.

I just wonder if all the gunk would rob power. As for italien tune-ups...she will pull 115mph with accelerator only 3/4 way down. So its not lacking for power.

I just wonder if burning WVO is going to be bad with this much soot already in there?

__________________
Paul
Benz-less
I need an SDL !