Took a trip down to Tucson from Saturday to this morning. I drove the 300D,
wifey followed in the Acura (she was following in the Acura just workin' on her
fitness..).
Remembered there are four places that sell bio. I burned two tankfulls (B-99)
through in four day.
Still amazed how much quieter she runs and how much less she smokes when using
bio. Then, I remembered there is only ONE SINGLE PUMP of bio in all of
Phoenix/Mesa/Tempe. Phoenix is dumb. Tucson isn't. And, furthermore, it's too
hot already.
Bob Rentfro
'77 300D 168K
'87 Acura Legend 183K
Goodyear, AZ
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From: "Hans Neureiter" <[EMAIL PROTECTED]>
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Subject: Re: [MBZ] OM 617 badly sick (was 126 pre chambers)
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One other observation: the frequency of the knock is as close as I can
tell 1/2 the rpm i.e. the result of the powersroke of one of the
cylinders.
On 3/14/07, Hans Neureiter <[EMAIL PROTECTED]> wrote:
> Today I went to do some more investigating:
> Excessive blow-by is not evident. The turbo is slightly oily, but the
> shaft is moving a little in radial direction.
> The motor started right up. A huge, scary clunk at first that turned
> into a steady, loud hammering. Oil pressure first pegged and went to
> 2.5 bar at a steady 800 RPM idle.
> When operating temp reached 85 C (after ~ 5 min.) pressure dropped to
> slightly above 1 with a few short excursions to below 1 bar.
> Loosening the injector lines resulted in a noticeable reduction of
> knock intensity but was equal for each cylinder.
> Using a stethoscope, the highest intensity of the knock is apparent
> near the front crank seal and at the Vac.pump housing.
> Lots of blue smoke at first that never really cleared.
> Motor ran for at least 20 minutes until turned off.
> Questions:
> Can injectors/prechambers be ruled out as major cause?
> Does oil pressure behavior indicate crank bearing failure?
> Does most noise coming from front crank seal indicate balancer failure?
> Do I have a conglomeration of failing parts (Turbo seal = blue smoke, etc.)
> My conclusion so far: 90% bottom end problem. But what?
>
> On 3/14/07, Trampas <[EMAIL PROTECTED]> wrote:
> > I have two W126s with OM617s that my wife is after me to get rid of. I am
> > located in Raleigh NC. Just in case you need an engine.
> >
> > One of the cars is a 1985 300SD with around 300k miles, runs and drives but
> > needs front end rebuilt (tie rods etc). Also the body is a bit rough as it
> > does have 300k miles.
> >
> > The other one is a 1984 500SEL which I put a OM617 in, the engine runs
> > great, but the body is rusted. The engine came from a 1982 300D that was in
> > worse shape.
> >
> > I have been meaning to get some pictures of the two beasts, will let you
> > guys know when I get some up.
> >
> > Trampas
> >
> > -----Original Message-----
> > From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]
> > On Behalf Of Peter Frederick
> > Sent: Tuesday, March 13, 2007 9:08 PM
> > To: Mercedes Discussion List
> > Subject: Re: [MBZ] 126 pre chambers
> >
> > Worst case it ingested water and it's toast (bent rods), but in that
> > case the response would have been pretty fast and probably wouldn't
> > have started. Lots of blue smoke out the back before it died?
> >
> > Don't know -- time to pull the injectors and do a compression test.
> >
> > Peter
> >
> >
> > _______________________________________
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> >
> > _______________________________________
> > http://www.okiebenz.com
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> >
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> >
>
>
> --
> Hans Neureiter, Houston, TX
> '82 300SD, '95 E300D
>
--
Hans Neureiter, Houston, TX
'82 300SD, '95 E300D
