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#1
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Tips on cleaning around injector threads?
Above where my injectors screw into the cylinder head (down by the heat shield/crush washer) is totally full of dirt etc. Any tips on cleaning this out? I'd like to remove the injectors and maybe clean them myself (following Jeremy's excellent guide) or pay someone to do this. But obviously I don't want all that crap falling in my prechambers. Should I just use degreaser and blast it out with water? I'm always weary of getting too much water around.
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#2
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I use engine degreaser, and a pressure washer...
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John HAUL AWAY, OR CRUSHED CARS!!! HELP ME keep the cars out of the crusher! A/C Thread "as I ride with my a/c on... I have fond memories of sweaty oily saturdays and spewing R12 into the air. THANKS for all you do! My drivers: 1987 190D 2.5Turbo 1987 190D 2.5Turbo 1987 190D 2.5-5SPEED!!! 1987 300TD 1987 300TD 1994GMC 2500 6.5Turbo truck... I had to put the ladder somewhere! |
#3
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Take it to a DIY car wash and blast it clean with hot soapy water. Then rinse. The heat from the engine will dry it on the way back home.
Charlie
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there were three HP ratings on the OM616... 1) Not much power 2) Even less power 3) Not nearly enough power!! 240D w/auto Anyone that thinks a 240D is slow drives too fast. 80 240D Naturally Exasperated, 4-Spd 388k DD 150mph spedo 3:58 Diff We are advised to NOT judge ALL Muslims by the actions of a few lunatics, but we are encouraged to judge ALL gun owners by the actions of a few lunatics. Funny how that works |
#4
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This is what I normally do. Run the engine warm, not hot. Spray it with 'Simple Green' degreaser or similar, wait for 1-2 minutes, brush dirt off with an old tooth brush and spray it with a water from a wahser bottle. Blast it with compress air. Repeat if necessary. Costs you next to nothing.
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Not MBZ nor A/C trained professional but a die-hard DIY and green engineer. Use the info at your own peril. Picked up 2 Infractions because of disagreements. NOW reversed. W124 Keyless remote, PM for details. http://www.peachparts.com/shopforum/mercedes-used-parts-sale-wanted/334620-fs-w124-chasis-keyless-remote-%2450-shipped.html 1 X 2006 CDI 1 x 87 300SDL 1 x 87 300D 1 x 87 300TDT wagon 1 x 83 300D 1 x 84 190D ( 5 sp ) - All R134 converted + keyless entry. |
#5
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Just use a can of brake cleaner, will take it all off in a hurry. What I always use if I have a diesel leak and need to make sure I fixed it...
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#6
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Guess I was being too cautious, thanks all.
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#7
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"(down by the heat shield/crush washer)"
Do not blast it with water or anything water based if you want to clean out the heat shield seat area of the cylinder head. Use a long flat blade screwdriver wrapped with cotton jeans cloth strip, soaked with WD40 and twist it back and forth to pick up the carbon gunk little by little. Change jeans strip when there's gunk on it. When it looks clean, crank the starter to blow out any debris that has fallen into the pre chamber.
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85 300D turbo pristine w 157k when purchased 161K now 83 300 D turbo 297K runs great. SOLD! 83 240D 4 spd manual- parted out then junked |
#8
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Quote:
his question is concerning BEFORE he takes out the injectors...
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John HAUL AWAY, OR CRUSHED CARS!!! HELP ME keep the cars out of the crusher! A/C Thread "as I ride with my a/c on... I have fond memories of sweaty oily saturdays and spewing R12 into the air. THANKS for all you do! My drivers: 1987 190D 2.5Turbo 1987 190D 2.5Turbo 1987 190D 2.5-5SPEED!!! 1987 300TD 1987 300TD 1994GMC 2500 6.5Turbo truck... I had to put the ladder somewhere! |
#9
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Thanks funola, that's exactly where I want to clean out. I thought of using a screwdriver/rag like you said but I doubt I could get it all, it's so tight. Maybe I could blow compressed air on it as well with wd40.
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#10
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I quoted his exact words: "(down by the heat shield/crush washer)". That to me is after he takes out the injectors. Just wanted to avoid misunderstanding and disaster.
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85 300D turbo pristine w 157k when purchased 161K now 83 300 D turbo 297K runs great. SOLD! 83 240D 4 spd manual- parted out then junked |
#11
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Quote:
If the carbon is really thick, scrape most of it away first with a brass pick or whatever you can find that is softer than steel (aluminum strip?) so as not to scratch the cyl head, then spin starter to blow out the debris, then use the denim/screwdriver.
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85 300D turbo pristine w 157k when purchased 161K now 83 300 D turbo 297K runs great. SOLD! 83 240D 4 spd manual- parted out then junked |
#12
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I did mean clean while the injectors are in place. Dirt has collected in the recesses where the injectors screw into the cylinder head. Sorry for the confusion.
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#13
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Quote:
On them while you cannot see the Heat Shield the Heat Shield is closer to the end of the Injector.
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84 300D, 82 Volvo 244Gl Diesel |
#14
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Quote:
Yeah we don't know which engine he has. But per your pic, heat shield 110 is clearly visible once the injector is removed. As long as you can put a socket and a ratchet on the injector to remove it, I would think you should be able to get a straight shot to access the heat shield seat with a long screw driver wrapped in denim to clean it.
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85 300D turbo pristine w 157k when purchased 161K now 83 300 D turbo 297K runs great. SOLD! 83 240D 4 spd manual- parted out then junked |
#15
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Quote:
After he gets the Injector out He can do what he wants to clean the Heat Shield area. Where I worked we had a Brush made for use with a Drill Motor that the fine Bristles pointed down on welded to a 1/4" Rod. You just stuck that in the Hole and gave the Triger a quick squeeze and release. Despite the worries of Bristles falling off the Brush and getting into the Engine there is all manner of Injector Tube Brushes you can buy. If a Bristle from the Brush falling into the Engine was a freaquent problem they would not sell the Brushes. In My case I had an Air Gun with a long Nozzle and I would stick that down into the combustion chamber and blast some Air. Next I would pull that up and blast Air into the Injector tube so it would create a spiral flow. After that you can crank the Engine if you want to blow out stuff. Of course you could also look into the Hole and stick a Magnet down their to get any Bristles. In the pic is an example of some Injector Tube Brushes. These are made to turn by hand but there are others made for use in a Drill Motor or Pneumatic Drill.
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84 300D, 82 Volvo 244Gl Diesel |
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