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#1
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W210 OM606 smoke coming from under the plastic beauty panel on the head.
Hi all,
I've got a 1997 e300 with the non-turbo om606. I've got a little bit of smoke coming from under the plastic panel on head. It's coming from a specific area, probably cylinder 5. I haven't torn into it yet, but I'm unfamilar with these motors. Has anyone experienced this? Is there a gasket that will need to be replaced if I remove the intake cross over tube? I know the pcv is in that area, and i'm not sure if an oil leak can occur at the injector. The vehicle is new to me, and the only real diesel experience I have is with 6.0 Powerstrokes. I know leaky injector o-rings can cause oil leaks, but the 6.0 uses oil pressure to actuate the injectors. Thanks! Also, everything is worthless without pics!
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1997 E300 Diesel - 222K miles |
#2
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You may have one of the return lines on the injectors leaking. They're rubber hoses and they harden and leak over time. I had one fail on my SDL yesterday, you'd be surprised the mess they can make too.
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#3
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The Crankcase vent is under there, that may be where the smoke is coming from. It is okay to run the engine without the crossover pipe and cover.
Edit: I could have guessed the color was Smoke Silver, most all were that color. I have two friends wit three between them that are that color.
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All Diesel Fleet 1985 R107 300SLD TURBODIESEL 2005 E320 CDI (daily) LOTS of parts for sale! EGR block kit http://www.peachparts.com/shopforum/diesel-discussion/355250-sale-egr-delete-block-off-plate-kit.html 1985 CA emissions 617 owners- You Need This! Sanden style A/C Compressor Mounting Kit for your 616/ 617 For Sale + Install Inst. Sanden Instalation Guide (post 11): http://www.peachparts.com/shopforum/diesel-discussion/367883-sanden-retrofit-installation-guide.html |
#4
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It isn't misfiring correct?
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Only diesels in this driveway. 2005 E320 CDI 243k Black/Black 2008 Chevy 3500HD Duramax 340k 2004 Chevy 2500HD Duramax 220k |
#5
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The PCV on the NA cars is a nightmare of complexity. Also, the plastic and rubber bits get hard and break apart so that's probably where the smoke is coming from.
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-Evan Benz Fleet: 1968 UNIMOG 404.114 1998 E300 2008 E63 Non-Benz Fleet: 1992 Aerostar 1993 MR2 2000 F250 |
#6
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Pull the cover and see what you got.
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Jim |
#7
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Thanks for the direction guys.
I was suspecting the PCV. I don't anticipate a leaky injector because it doesn't smell like diesel in the garage, but it's worth looking into. I'll report back for future reference when I have time to dive in.
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1997 E300 Diesel - 222K miles |
#8
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There is no PCV under that cover, but the entire crankcase breather system is under there along with the injectors. The cross over tube must be removed. It has one bolt on the driver side and about 4 on the passenger side. Once you pull it loose, you have a wire and vacuum line attached on the underside. If you don't see the problem you can run the engine with the cover and crossover off to see what is going on.
I removed my cover to try to find which injector was nailing, and with the cover off there was no nailing. I guess a hard line was snapping in the plastic cover. I put the crossover back on and left the cover off. The car has never been so quiet. I did find that a couple of my breather lines were broken where they attached to the intake manifold. I believe I was sucking unfiltered air into the engine there, so check your breather system.
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'97 E 300 D |
#9
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Quote:
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All Diesel Fleet 1985 R107 300SLD TURBODIESEL 2005 E320 CDI (daily) LOTS of parts for sale! EGR block kit http://www.peachparts.com/shopforum/diesel-discussion/355250-sale-egr-delete-block-off-plate-kit.html 1985 CA emissions 617 owners- You Need This! Sanden style A/C Compressor Mounting Kit for your 616/ 617 For Sale + Install Inst. Sanden Instalation Guide (post 11): http://www.peachparts.com/shopforum/diesel-discussion/367883-sanden-retrofit-installation-guide.html |
#10
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Ok. We at least agree that it has a breather system under there. Positive crankcase ventilation has a source of filtered air to the crankcase which this breather system does not have.
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'97 E 300 D |
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