I have zero tech information of this particular engine, but, like many late version diesel engines, it has computer controlled injectors, which use high pressure oil controlled by an electrical device, controlled by an engine computer. IF that is the system, in principle, this car uses, I posit as follows:
Oil change place put in wrong oil, or failed to seal up the oil system somehow. Owner drove the car till low oil, or improper oil, caused it to run "weird" and he stopped, heard knocking, and checked oil. Scared the hell out of him because it sounds really bad, so he put it in the "wait for Kaleb to buy list".... then came Kaleb. My thoughts... One or more injectors seized internally due to lack of high pressure oil to open and close injector, or wrong oil... The term is, I believe, "Stiction" [likely wrong spelling ] ... regardless, the end result is that injector[s] are no longer firing "in time" as ordered by computer.. thus, making a huge knock sound, because the engine is running "out of time".. Big scary sound goes away suddenly because the injector[s] that were "stuck for lack of lubrication" finally got oil enough to open and close, more or less when they should. Following this line of thought, the oil change guy used 20W0 gas engine oil, it got sucked out because it was the wrong oil, guy put the right oil in to replace the empty dipstick, but never ran the car. Kaleb ran it longer than he did, so it finally got enough oil to the high pressure oil pump to run the injectors, and noise went away... Maybe.... but... the damage is done to injectors which seized internally. On Mon, Jun 7, 2021 at 5:28 AM Kaleb Striplin via Mercedes < mercedes@okiebenz.com> wrote: > Yea that was kind of strange > > Sent from my iPhone > > > On Jun 7, 2021, at 2:23 AM, Allan Streib via Mercedes < > mercedes@okiebenz.com> wrote: > > > > You can if you drive it with no oil. > > > > Bizarre that he didn't try to make a claim on the oil change shop. That > > would have been my first reaction. > > > > Allan > > > > Andrew Strasfogel via Mercedes <mercedes@okiebenz.com> writes: > > > >> You can't kill a diesel in less than 1 million miles. > >> > >>> On Sun, Jun 6, 2021, 11:13 PM Kaleb Striplin via Mercedes < > >>> mercedes@okiebenz.com> wrote: > >>> > >>> That is what i am thinking. There is a check engine light so I will > see > >>> what it tells me. > >>> > >>> On 6/6/2021 10:09 PM, Frederick Moir via Mercedes wrote: > >>>> Plugged injector? They can be very loud. > >>>> > >>>> On Sun, Jun 6, 2021 at 10:59 PM Kaleb Striplin via Mercedes < > >>>> mercedes@okiebenz.com> wrote: > >>>> > >>>>> So against my better judgement I bought this 2009 ML320 Bluetec today > >>>>> for $1k. Guy who owned it said he had the oil changed about 2 years > ago > >>>>> (truck has been sitting since), then left for a 4 hour road trip. He > >>>>> says suddenly it starts acting strange and he pulls over and its got > a > >>>>> loud knock. He says he checked the oil and the dipstick was dry, > never > >>>>> got a low oil level warning. He says he put oil in it then had it > towed > >>>>> home. I show up today, throw a battery in it and it fires right up > but > >>>>> sounds like a rod is about the go shooting out the side of the > block. I > >>>>> load it up and bring it home. When I get home, I made this video > while > >>>>> on the trailer, then after unloading it. Just watch the video and > you > >>>>> will see what I mean. What the hell is going on with this thing? > >>>>> > >>>>> https://youtu.be/XVt12FnCSJE > >>>>> > > > > _______________________________________ > > 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
