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#1
05-07-2005, 07:23 PM
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OM606 Turbo clanking from timing chain galley
I was running a few cans of diesel purge through the old girl today, and while waiting around, I decided to take the oil cap off to see what kind of blowby I had.. while there was minimal blowby, I heard an audible "clanking" noise which appeared to be coming from the chain galley. I don't recall hearing this on a 617 or 603 with the oil cap off and the car running. You cannot here the noise with the oil cap on. I made a quick video..
http://207.44.234.41/e300/MVI_1938.AVI Ideas? Should I start looking at timing chain stretch? Or am I being paranoid? 
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#2
05-07-2005, 10:04 PM
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Timing chains on 606's last a very, very long time. I have personaly seen a car with 317k and the original chain. The owner said it was stretching at 1 degree every 100k miles and he never planned on changing it becuase he doesn't think he will keep it past 500k miles.
But the car had used Mobil 1 from about 70k miles and he had a Frantz filter on it.
__________________
1999 SL500 1969 280SE 2023 Ram 1500 2007 Tiara 3200
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#3
05-08-2005, 02:55 PM
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No ideas? Can anyone with a 606 take thier oil cap off with it running and tell me you have a similar noise?
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#4
05-08-2005, 03:24 PM
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Hi
Took the cap off the 606 and had a slight metallic noise but nothing like yours, mine has 199K. Cheers, McCool300TD
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1988 190E Sold 1996 C230K Sport Sold  His: 98 E300TD Estate, 7 seater, Avantgarde, Silver, Black cloth, parameter steering, dipping rvm, folding mirrors, rain sensing wipers, pentagon tints, 17" Elegance wheels. 298K Hers: 93 300TD, 7 seater, Grey MB Tex pearl blue metallic, 15" 8 hole alloys, OTG, Cruise, not much else 220K
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#5
05-08-2005, 05:17 PM
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Thank you. I was set out to measure the chain stretch today until I realized I would have to take off all the metal and cloth/rubber injector lines in order to pull the valve cover off. This meant I would have to take off the intake manifold yet again. With no dial indiactor on hand to accurately do it, I skipped it for today.
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#6
05-08-2005, 08:14 PM
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Certainly check the chain stretch but perhaps it is the chain guide tensioner going bad? Or a defective chain guide itself? Just would check everything out in there as a general precaution. Any chance you are hearing the vaccum pump making more noise than normal?
 Too nice a car not to accuratly locate it.
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#7
05-08-2005, 08:53 PM
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John
I just checked my wifes car (98 E300D - 74K), it sounds pretty much the same as yours. It's amazing that when you re-install the oil cap the tapping totally vanishes. I could not detect ANY blowby in your video, this is pretty amazing given your cars mileage. I also checked my OM602 engine and it did not make any noise at all.
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#8
05-08-2005, 09:55 PM
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I remeber the first time I came across that noise on a 606, sure as hell got me worried. MB's standpoint on it was that it was normal noise, albeit, yours sounds a bit louder than that one. A friend of mine has a n/a 606, I'll listen to that one and see if it does the same.
__________________
 1980 500SE/AMG Euro 1981 500SEL Euro 1982 380SEL 1983 300TD 1983 500SEC/AMG Euro 1984 500SEC 1984 300TD Euro 1986 190E 2.3-16 1986 190E 2.3 1987 300D 1997 C36 AMG 2003 C320T 4matic past: 1969 280SE 4.5 | 1978 240D | 1978 300D | 1981 300SD | 1981 300SD | 1982 300CD | 1983 300CD | 1983 300SD | 1983 380SEC | 1984 300D | 1984 300D | 1984 300TD | 1984 500SEL | 1984 300SD | 1985 300D | 1986 300E | 1986 560SEL | 1986 560SEL/Carat | 1987 560SEC | 1991 300D 2.5 | 2006 R350
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#9
05-08-2005, 10:05 PM
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Quote:
Checked my 98 E300DT and sounds exactly like your with the oil cap off. My E300DT has 135K miles on it
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#10
05-08-2005, 10:20 PM
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Ok I feel better, thanks guys. I was ready to tear into the motor today, that sound scared the ***** out of me!
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#11
05-09-2005, 12:12 AM
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77 K here and mine sounded just like yours.
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01 Ford Excursion Powerstroke 99 E300 Turbodiesel 91 Vette with 383 motor 05 Polaris Sportsman 800 EFI 06 Polaris Sportsman 500 EFI 03 SeaDoo GTX SC Red 03 SeaDoo GTX SC Yellow 04 Tailgator 21 ft Toy Hauler 11 Harley Davidson 883 SuperLow
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#12
05-09-2005, 12:16 AM
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for me anyways, something like that always happens before a long drive or when you really need the car!
__________________
1980 500SE/AMG Euro 1981 500SEL Euro 1982 380SEL 1983 300TD 1983 500SEC/AMG Euro 1984 500SEC 1984 300TD Euro 1986 190E 2.3-16 1986 190E 2.3 1987 300D 1997 C36 AMG 2003 C320T 4matic past: 1969 280SE 4.5 | 1978 240D | 1978 300D | 1981 300SD | 1981 300SD | 1982 300CD | 1983 300CD | 1983 300SD | 1983 380SEC | 1984 300D | 1984 300D | 1984 300TD | 1984 500SEL | 1984 300SD | 1985 300D | 1986 300E | 1986 560SEL | 1986 560SEL/Carat | 1987 560SEC | 1991 300D 2.5 | 2006 R350
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