[W126 Coupe] Timing chain and lubrication maintenance note...

[Carl Hansen]

The engine has been run without oil at one point to cause the initial 
damage. Oil has obviously been added after the fact but the damage is 
already done and later on the engine blows.
It happened shortly after purchasing the car as I understand it, correct?
Carl

----- Original Message ----- 
From: "Josh Allen" <heyallen at null-ptr.net>
To: "Mercedes Coupes Mailing Lists" <mbcoupes at mbcoupes.com>
Sent: Friday, January 25, 2008 12:34 AM
Subject: Re: [W126 Coupe] Timing chain and lubrication maintenance note...



> Carl Hansen wrote:

>> This problem is not caused by a worn cam chain.

>> There's no way a worn chain can cause that kind of damage. At 150,000 

>> miles, no way.

>> That the engine has been running without oil for whatever reason.

>> No doubt about it.

>>

>> Carl

>

> Supposedly it had oil pressure indicated up to the point where the engine 

> quit, but it wouldn't be unheard of for the sender to have failed.  That 

> having been said, it doesn't indicate any pressure with the key turned on, 

> now...

>

> I really don't know what happened to it, other than the apparent impact 

> between valve train and piston(s?) that punched out the left side cam 

> bearings. I haven't been motivated enough to drop the pan in place, as 

> I'll see what's down there when I go to install the replacement engine.

>

> -Josh

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