Good question, I don’t know. I suspect it’s mostly age/mileage related. When I had mine, which is now a resident of Okie Acres, I found that there were thicker sealing rings that could be found in Europe and were preferred as replacements. According to what I read, when using the thicker sealing rings BD was less likely to reoccur.
Even after I resealed the front three cylinders on mine (the back three were good) a couple of them still bubbled slightly. I figured I would watch it and live with it until it got worse. Understand that replacing the sealing rings involves pulling the injectors, which often requires a dent-puller-like tool, cleaning the bore and seat, cutting a new seat (need a seat cutting tool), installing the new sealing rings, torquing the hold-down bolts in a specific way to a very low torque value (need a small torque wrench capable of accuracy in a very low range.) Screw up any one of these steps and it’s game over. A very high stakes sort of job. -D > On May 19, 2022, at 11:36 AM, Allan Streib via Mercedes > <mercedes@okiebenz.com> wrote: > > Does this happen to pretty much all of them eventually, is it rare, or > ballpark how likely is it to happen? > > On Thu, May 19, 2022, at 7:51 AM, dan penoff.com via Mercedes wrote: >> Price is a touch high, but not out of range compared to other >> comparable sales I’ve seen. >> >> Yes, you must remove the plastic cover over the cylinder head to see >> the effects of the “Black Death” condition, if it exists. It will be >> obvious if affected. Look around the base of each injector for a >> buildup of black crud, which is burned oil and fuel that’s slipped by >> the injector. This is caused by the sealing ring at the base of the >> injector failing and allowing combustion products to leak out of the >> cylinder. At the very beginning, it appears as bubbling around the base >> of the injector and gradually worsens over time. Really bad examples >> can have the whole cylinder head area completely filled with the black >> crap that has to be literally chipped away to get to the injectors and >> head. >> >> Repair is not fun and will require some special tools, like an injector >> puller, but they’re not terribly expensive. It does have some risk, >> however, as the hold down bolts can be run in too far and puncture the >> water jacket. >> >> I’ve done it and I don’t ever want to do it again. >> >> -D >> >> Sent from my iPad >> >>> On May 18, 2022, at 11:17 PM, Allan Streib via Mercedes >>> <mercedes@okiebenz.com> wrote: >>> >>> I'm half tempted to check this out. It's not terribly far away. >>> >>> I assume that "black death" is not readily visible without at least >>> removing the plastic engine cover? What would I look for? >>> >>> >>>> On Tue, May 10, 2022, at 2:14 PM, Allan Streib via Mercedes wrote: >>>> Realtor spec. Looks clean. >>>> >>>> https://louisville.craigslist.org/cto/d/clarksville-2005-mercedes-e320-cdi/7481634459.html >>>> _______________________________________ >>>> http://www.okiebenz.com >>>> >>>> To search list archives http://www.okiebenz.com/archive/ >>>> >>>> To Unsubscribe or change delivery options go to: >>>> http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com >>> >>> _______________________________________ >>> http://www.okiebenz.com >>> >>> To search list archives http://www.okiebenz.com/archive/ >>> >>> To Unsubscribe or change delivery options go to: >>> http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com >>> >> _______________________________________ >> http://www.okiebenz.com >> >> To search list archives http://www.okiebenz.com/archive/ >> >> To Unsubscribe or change delivery options go to: >> http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com > > _______________________________________ > http://www.okiebenz.com > > To search list archives http://www.okiebenz.com/archive/ > > To Unsubscribe or change delivery options go to: > http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com > _______________________________________ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
