o far, so good.
The early designs were sleeve bearing and they didn't last nearly as
long as the later design - often failed without much warning. Were recalled.
Marshall
--
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Univ of Pittsburgh School of Medicine
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_
compensator on non-turbo diesels is an ADA, while the
pressure fuel enrichment control on a turbo is an ALDA. They are similar
devices but serve different functions.
Marshall
--
Marshall Booth Ph.D.
Ass't Prof. (ret.)
Univ of Pittsburgh School of Medic
in excessive engine wear.
Marshall
--
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Univ of Pittsburgh School of Medicine
[EMAIL PROTECTED]
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d much and is NOT a super
lubricant (and both of those characteristics are desirable in this
application). It also has the advantage of being solid at most outside
temperatures and as such can be tossed as a hunk into your tool box and
is not at all messy to install/apply.
Marshall
--
Ma
roughness and
re-torque that one.
Marshall
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as I get home I loosen them, apply paraffin, and re-tighten to
spec. DO NOT ALLOW THE PARAFFIN TO TOUCH EITHER THE LUG OR WHEEL SEAT.
Haven't had a lug seize since I started using this technique. A long
extension is MUCH more likely to shear the lug that a rattle gun.
Marshall
--
Marshall Bo
D is NOT remotely the same OM616 engine in a
240D. The former is about 20% more efficient, gets almost 25% better
economy, starts without the block heater at 10-20 colder temperatures. I
expect the only common parts for the two engines are the injectors,
glow lugs and radiator cap!
Marshall
I have NO idea what that last sentence means. Was it a question? Isn't
it still obligatory to use a question mark to end a question?
Marshall
--
Marshall Booth Ph.D.
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Univ of Pittsburgh School of Medicine
[EMAIL PROTECTED]
__
REALLY burp it. Not
completely getting all the air out will result in the temp gauge
shooting toward the peg as the coolant in the passages that aren't
complete filled with coolant tries to boil. Coolant vapor isn't worth a
damn as a coolant!
Marshall
--
old in the US had injection parts made from different materials
than those sold in Europe because of the poor quality of US fuels. Once
the ULSD standards were implemented Bosch/Mercedes could use injection
parts made from the same materials in US and Euro cars.
Marshall
--
Marshall Booth Ph.D.
later) diesels. Using anything else will void
the warranty and may lead to major problems with the emissions control
system (and they are EXPENSIVE to repair I've been told).
Marshall
--
Marshall Booth Ph.D.
Ass't Prof. (ret.)
Univ of Pittsburgh School of M
cars have the same system. Replacing the overvoltage
relay has restored proper function in the 3 OM60x engines I've owned
when the symptoms you describe appeared. In an earlier OM60x engine (not
equipped with an overvoltage relay), replacing the connectors from the
engine speed sensor to th
plugged trap is driving an engine
that has NOT been properly maintained. Measuring and servicing the trap
is covered in the engine manual.
Marshall
--
Marshall Booth Ph.D.
Ass't Prof. (ret.)
Univ of Pittsburgh School of Medicine
[EMAIL PROTECTED]
___
ing the fuel flowing at such temps is more of a
problem than the engine turning fast enough to start, but that's the the
coldest temp I've experienced in the last 40+ years.
Marshall
--
Marshall Booth Ph.D.
Ass't Prof. (ret.)
Univ of Pittsburgh School of Medicine
[EMAIL PROTECTED]
_
ngine, super service. If it were
to fail tomorrow, It has been the most satisfactory car I've ever owned
(but hardly the cheapest to own) for the 20+ years I've owned it!
Marshall
--
Marshall Booth Ph.D.
Ass't Prof. (ret.)
Univ of Pittsburgh School of Medicine
[EMAIL PROTECTED]
_
on-dam gasket for your '91 engine.
Marshall
--
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Univ of Pittsburgh School of Medicine
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For used p
and are NOT difficult to maintain, but they have very different
maintenance issues than cars powered by 617.95 engines.
Marshall
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Univ of Pittsburgh School of Medicine
[EMAIL PROTECTED]
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LarryT wrote:
> Hmm... I'm wondering if I should go ahead and replace the B2 as PM for my
> 78? IIRC, they're not rea expensive - will check on it -
The 78 transmissions don't exhibit the B-2 failure.
Marshall
--
Marshall Booth Ph.D.
Ass't Prof. (ret.)
Univ of Pit
re-tap the threads. Get a junker assembly.
Marshall
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Univ of Pittsburgh School of Medicine
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For
)116 257 7692
#
I use Mobil 1 ATF as it behaves much better in cold weather.
Conventional DexronIII/Mercon is a bit too viscous in cold weather.
Marshall
--
Marshall Booth Ph.D.
Ass't Prof. (ret.)
Univ of Pittsburgh School of Medicine
rate fuse box. The original fuse was a
tad too small for the job.
Marshall
--
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Univ of Pittsburgh School of Medicine
[EMAIL PROTECTED]
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he trans was
> running cool. I'd like to plumb one into my 300SD sometime, just for
> kicks.
Your 300SD (if it's a 126) should already have a transmission fluid
cooler! Not sure about a 116 SD.
Marshall
--
Marshall Booth Ph.D.
Ass't Prof. (ret.)
Univ of Pittsburgh Sc
people like that when I have something to sell?
Mercedes has a number of "factory rebuilt" assemblies. They ARE
remanufactured a plants in Europe. They carry a 1-4 year warranty
(specific to each part). They used to be a good value. Since the dollar
has fallen (compared to the Euro)
nection from the speed sensor leads into the wiring harness can
corrode and I've had to clean and/or replace them on several cars
powered by OM60x engines.
Marshall
--
Marshall Booth Ph.D.
Ass't Prof. (ret.)
Univ of Pittsburgh School of Medicine
[EMAIL PROTECTED]
t
will start. Next time don't let it go dry!
Marshall
--
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Univ of Pittsburgh School of Medicine
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but
the head gasket tended to need replacing at ~ 90kmi. Absolutely nothing
common about the diesel and gas engines. The 140 is a money pit. Lots of
wonderful features and it drives like a dream, BUT it's expensive to
maintain.
Marshall
--
Marshall Booth Ph.D.
Ass't Prof. (ret.)
s and a few independents - NOT Wal-Mart);
Amsoil European Car Formula 5W-40. There may be others, but I trust
those oils!
Here's a complete list of ALL Mercedes approved oils:
http://www.whnet.com/4x4/oil.html
These meet the minimum Mercedes specs, but they are NOT all equivalent.
Marsha
Craig McCluskey wrote:
> On Tue, 11 Sep 2007 16:16:56 -0400 Marshall Booth <[EMAIL PROTECTED]>
> wrote:
>
>> On some cars (201s for sure) the only way the vibration damper is
>> available is along with front half of the driveshaft. At least one
>> member of
esel supply and much of the noise slowly returns as
the Cetane index drops.
Marshall
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Univ of Pittsburgh School of Medicine
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ttached a copy of the
diagram to the post.
I find it easier to simple pour a bottle of Techron Concentrate into the
fuel tank and drive the car as you ordinarily do.
Marshall
--
Marshall Booth Ph.D.
Ass't Prof. (ret.)
Univ of Pittsburgh School of Medicine
[EMAIL PROTECTED]
--
psi or so. The shim
material must be of the proper quality of steel or they can shatter
(don't ask how I know that) and that can destroy the injector.
Marshall
--
Marshall Booth Ph.D.
Ass't Prof. (ret.)
Univ of Pittsburgh School of Medicine
[EMAIL PROTECTED]
Rich Thomas wrote:
> So is that true, these are the same product? Diesel Purge I never see,
> Techron is in the auto parts store.
>
> --R
>
> Marshall Booth wrote:
>> I'd start with a dose of a superior injector
>> cleaner (Diesel Purge deliver
mper. Others argue that that is
not always possible.
Marshall
--
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Univ of Pittsburgh School of Medicine
[EMAIL PROTECTED]
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For us
0 bar
pressure of one another. They need to be matched to within 5 bar for the
engine to run smoothly. So, whether you rebuild or replace your
injectors, they need to be calibrated! Some shops are equipped to do
this, but many are not.
Marshall
--
Marshall Booth Ph.D.
Ass't Prof. (ret.)
Un
as required. This is beyond what most DIYers can do as an
injector tester and the skill and knowledge to operate it is required.
If the motor mounts have deteriorated (and they surely have if they are
more that 10 years old) that will exacerbate even the slightest imbalance.
Marshall
--
Ma
Marshall Booth wrote:
>
> The pressure line from the ALDA, thru the switchover valve, to the
> intake manifold MUST be open and free of obstruction. Blow (from the
> ALDA end toward the manifold - there should be no more resistance to air
> flow than would be expected from a
mph acceleration
numbers published by Mercedes. I'd give you the actual number if you
provide the year and model car you are discussing (and whether it is
California certified). It's more than just desirable to provide that
information IN EVERY post referring to that car.
Marshall
--
M
7;87 WAS ATF. Only later did
Mercedes change to a proprietary power steering fluid.
Marshall
--
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Univ of Pittsburgh School of Medicine
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car ground speed - NOT engine speed.
Could be belt idler bearing or any device driven by the belt. Does the
fan blade move more than 10 mm front to back? That's about the limit
before service is required.
Marshall
--
Marshall Booth Ph.D.
Ass't Prof.
d injector function, and
I'm sure other causes. Not something that can easily diagnosed without a
LOT more information.
Marshall
--
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Ass't Prof. (ret.)
Univ of Pittsburgh School of Medicine
[EMAIL PROTECTED]
___
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belt so
that it prevents the pulley from turning (but that may destroy the belt
- especially if it's not quite new).
Marshall
--
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Univ of Pittsburgh School of Medicine
[EMAIL PROTECTED]
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engine mounts. When they get bad enough, a sudden stop can shove
the engine right through the radiator (making a mess of the fan, fan
clutch, belt tensioner and sometime even the timing cover as well as the
radiator).
Marshall
--
Marshall Booth Ph.D.
Ass't Prof. (ret.)
Univ of Pittsburgh
mounts). If the front mounts have not been
measured, you can't rule them out even if they have been recently
replaced. The rear (transmission) mount is much more difficult to check.
If it's original, I can almost guaranty it should be replaced.
Marshall
--
Marshall Booth Ph.D.
Ass't
ything caught in the wheels, and I looked for
> anything caught in the fans.
May be related to WAY OVERFILLING the transmission if transmission fluid
overflow did in the rear engine (transmission) mount (but I doubt it).
The noise is likely the fan rubbing against the fan shroud! Very common
e manual
heating AC system. 50 mpg is a stretch, but I've gotten 44-45 with mine.
Marshall
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Univ of Pittsburgh School of Medicine
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is a turbo wastegate that is opened if the
emissions system fails or if the boost exceeds the limits.
When were the fuel and filters changed?
Marshall
--
Marshall Booth Ph.D.
Ass't Prof. (ret.)
Univ of Pittsburgh School of Medicine
[EMAIL PROTECTED]
___
rown by the belt in a line
from side to side.
Marshall
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For
he engine to drop into "limp home" mode. The
later engine has a more complex computer control and emissions system
that is more difficult to repair.
Marshall
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Univ of Pittsburgh School of Medicine
[EMAIL PROTECTED]
_
ccording to previous owners maintainance records
> this was last done only some 6 km prior.
If you use factory nitrogen cells, life tends to be upwards of 10+ years
or 150kmi. With aftermarket cells, I've had them fail in 1-3 years. The
factory rubber parts are FAR superior. Same with motor m
ake manifold - there should be no more resistance than blowing
through a large drinking straw. If there is pressure - clean out the line!
Marshall
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Marshall Booth Ph.D.
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Univ of Pittsburgh School of Medicine
[EMAIL PROTECTED]
__
Mitch Haley wrote:
>
> Marshall Booth wrote:
>> Sure would be nice if you mentioned the year and model car you were
>> discussing!!
>
> On Saturday, it was a '86 SDL.
Then it will be necessary to pull the head to determine if it's the head
or the h
elay
to buzz - might also be so for the earlier hazard light flasher.
Marshall
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Univ of Pittsburgh School of Medicine
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tions or help to locate the appropriate head for this
> car? I am considering experimenting
> with Evans waterless coolant to see if I can temporarily decrease this
> pressure from exhaust gases.
> I have heard so many nightmares of new heads doing the same thing.
--
Marshall Boo
of mine - new style and old - do/did!
Marshall
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For used parts e
use a
synthetic oil. Changing to a synthetic will usually quiet clatter but it
may take 10-20kmi. Changing lifters will usually NOT keep the lifters
quiet if you continue to use conventional oil! I've seen them get noisy
within a few weeks!
Injectors and glow plugs last about as long as they d
the oil pump occurs more often than
damaged timers. A failed vacuum pump on a 60x engine is to be avoided
even if it means replacing perfectly good pumps from time to time.
Marshall
--
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Univ of Pittsburgh School of
good for 150-250kmi. If it's leaking CHANGE IT, an if the
vacuum doesn't meet spec CHANGE IT.
Marshall
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Univ of Pittsburgh School of Medicine
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For new parts s
s made of) are reliable for about
10 years. NO MORE!
Marshall
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Univ of Pittsburgh School of Medicine
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oline engines.
http://www.chevron.com/products/prodserv/fuels/diesel/ulsd.shtml#A2
http://fleetowner.com/mag/fleet_abcs_ulsd/
http://www.clean-diesel.org/faqs.html
Marshall
--
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Univ of Pittsburgh School of Medicine
[EMAIL PROTECTED]
__
27;80s and I had
many friends that worked at the VW plant (now a Sony plant). The cars
were assemble there with many US parts, BUT the diesel engines all came
preassembled from Germany!! Fit and finish of the US built cars was
substantially inferior to the German built.
Marshall
--
Marshall Booth
ts. These CAN be
replaced, but until forced to, most refiners didn't.
Marshall
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Univ of Pittsburgh School of Medicine
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lve sticks open the piston hits it and often breaks the cam
shaft. That can ruin your day.
Marshall
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Univ of Pittsburgh School of Medicine
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For new parts
e smoke (and you can't adjust
it). You will have smoke if injector(s) dribble, have rotten spray
pattern or are way out of the proper pop pressures. A cracked head or
head gasket CAN do it too.
Marshall
--
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Univ of Pittsburgh School of
s damaged,
economy drops.
Marshall
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LWB250 wrote:
> Self-leveling suspension was available as an option on
> 123 chassis models (and possibly others) but it was
> the same system as the wagons with an engine driven
> pump, nitrogen spheres and the rest.
>
> Dan
NEVER available as a US 123 option.
Marshall
--
M
had NO trouble with rebuilt
injectors (I've NEVER bought a new one in 40+ years) providing you use a
certified rebuilder. It ain't rocket science!
Marshall
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Univ of Pittsburgh School of Medicine
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_
Alex Chamberlain wrote:
> On 8/23/07, Marshall Booth <[EMAIL PROTECTED]> wrote:
>> If you're putting more fuel into the engine and not getting more power
>> out then there WILL be smoke. If no smoke then the fuel is going
>> somewhere other than the engine (or you
somewhere other than the engine (or you are doing a lot more work - like
if the tire pressure are 10 lb low or brakes are dragging). The ALDA
didn't do it. All it does is raise fuel as boost increases. No boost, no
ALDA action. If there's too much fuel, then there wi
gasket.
Marshall
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Univ of Pittsburgh School of Medicine
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To
ST to
work on).
Marshall
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Univ of Pittsburgh School of Medicine
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Luther wrote:
> How much oil useage can worn valve guides cause?
As much oil as you've got when it gets bad enough!
Marshall
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Univ of Pittsburgh School of Medicine
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educe the play (measured at
the steering wheel) in a used box to less than 10-12 mm. Maximum
allowable play is 25 mm.
Marshall
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Univ of Pittsburgh School of Medicine
[EMAIL PROTECTED]
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; general detective work.
You need valve seals or guides AND seals.
Marshall
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Robert Rentfro wrote:
> What do you reckon is wrong with this?
>
>
>
>
>
> http://phoenix.craigslist.org/car/400626863.html
>
B\Almost surely a blown head gasket between the #1 piston and the chain
vault Rather common with early OM60x engines.
Marshall
--
Ma
e have required NO alignments
and others have needed two or three - usually because at least one was
improperly done)..
Marshall
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Univ of Pittsburgh School of Medicine
[EMAIL PROTECTED]
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thing else that kills them when you tow too far?
>
> -- Jim
All you need to keep the engine running to drive the front pump.
Marshall
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Univ of Pittsburgh School of Medicine
[EMAIL PROTECTED]
__
(such
as 20th century Mercedes diesels) to withing a fraction of one percent
that can be achieved with very carefully calibrated machinery. Not crude
at all.
Marshall
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Univ of Pittsburgh School of Medicine
[EMAIL PROTECTED]
__
7;t
burn yourself).
Replace the half axle with the blown boot with a good used or NEW one.
Don't consider a rebuilt one.
Marshall
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Univ of Pittsburgh School of Medicine
[EMAIL PROTECTED]
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Wonko the Sane wrote:
> I was trying to start a new oil thread so we could talk about something
> other than guns and penis size.
AMEN!
Marshall
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Univ of Pittsburgh School of Medicine
[EMAIL PROTECTED]
_
st chain operations
like Sears, Firestone, etc won't tell you that and will align the car,
but the alignment will NOT result in much or even any improvement).
Marshall
--
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Univ of Pittsburgh School of Medicine
[EMAIL PROTECTED]
_
Marshall Booth wrote:
>
> Your criteria is WAY too conservative. When the warm engine star5s to
> smoke at idle or the top speed and acceleration time start to drop (or
> 30kmi has passed) it's time to change the filter! Only use Mercedes
> approved filters!
>
>
oxidizer and the plumbing that replaced it) and because there are
relatively few California certified cars, the filters are expensive.
Marshall
--
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Ass't Prof. (ret.)
Univ of Pittsburgh School of Medicine
[EMAIL PROTECTED]
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ter, non standard air filter for the housing
>
Your criteria is WAY too conservative. When the warm engine star5s to
smoke at idle or the top speed and acceleration time start to drop (or
30kmi has passed) it's time to change the filter! Only use Mercedes
approved filters!
Marshall
Robert Bigham wrote:
> I never before heard of a wheel so tight it took driving with
> loose lugs to get it loose fro the hub. Wow.
Happens routinely in the rust belt!
Marshall
--
Marshall Booth Ph.D.
Ass't Prof. (ret.)
Univ of Pittsburgh School of Medicine
[EMAI
nto the lug threads and that has NEVER
allowed the the lugs to seize even when a gorilla over tightens them.
Never had one spontaneously come loose either when properly torqued.
Marshall
--
Marshall Booth Ph.D.
Ass't Prof. (ret.)
Univ of Pittsburgh School of Medicine
[EMAIL PROTECTED]
> Looking for help.
Sounds like the cruise control actuator going CRAZY. I expect that is
possible if the feedback loop becomes intermittent or opens. Try
unplugging it.
Marshall
--
Marshall Booth Ph.D.
Ass't Prof. (ret.)
Univ of Pittsburgh School of Me
oved, consumption may be a bit high in an OM61x
engined car. I would recommend M-1 15W-50 even in winter in the northern
US.
Marshall
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Univ of Pittsburgh School of Medicine
[EMAIL PROTECTED]
___
http://www.o
rear is the
> answer, but doesn't hurt to ask.
>
> Talking about the 87 190D.
Since you have to remove the pan to change the filter (the filter really
MUST be changed with the ATF change) it doesn't matter, but the drain
plug is at the back and so I'd jack up the front of
nsmission
may only need adjustment OR it may be worn out! It is, after all, 30
years old!
Marshall
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Univ of Pittsburgh School of Medicine
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For new parts see off
trap. Just removing the trap
doesn't get you home free though. The head may crack when the trap is on
but not actually fail for months or years after the trap is removed.
Marshall
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Univ of Pittsburgh School of Medicine
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___
ut they can never get a majority to approve it.
Marshall
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For
ys. Is this typical,
> and which speed is more likely to be correct?
>
> Allan
There is NO assurance that the sign is accurate. They vary more than 10%
in my experience.
Marshall
--
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Ass't Prof. (ret.)
Univ of Pittsburgh S
ponse time is a function of oil viscosity, engine
wear, filter condition AND the condition of the "O" rings (part #
015-997-94-48) on the oil filter cap stem (the really do need to be
changed every 20-30kmi). Once the harden the no longer serve their
intended function.
Marshall
--
Mars
x27;d be changing
filters every 2.5kmi or so (the way a Mercedes is designed) and adding a
qt of oil with each change.
Marshall
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Ass't Prof. (ret.)
Univ of Pittsburgh School of Medicine
[EMAIL PROTECTED]
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idle even more smoothly (providing everything else is
working as it should).
Marshall
--
Marshall Booth Ph.D.
Ass't Prof. (ret.)
Univ of Pittsburgh School of Medicine
[EMAIL PROTECTED]
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http://www.okiebenz.com
For new parts see official list
for oil to flow where it's not filtered?
>
> I put a Hengst in this time to see what happens.
Any chance that the filters got wet. Counterfeit filters are NOT unknown!
Marshall
--
Marshall Booth Ph.D.
Ass't Prof. (ret.)
Univ of Pittsbur
e like this? Air filter is new. Timing? EGR?
>
Adjust the ALDA clockwise until the smoke is barely visible at 4000+ rpm
at full load, full pedal. Then measure 0-62 mph acceleration!
Marshall
--
Marshall Booth Ph.D.
Ass't Prof. (ret.)
Univ of Pittsburgh Sch
belt tensioner shock absorber. It
can make a racket not unlike valve clatter when it fails. Push on the
shock upper and lower bushing with the engine running and if the clatter
is altered or subsides, you've found the problem.
Marshall
--
Marshall Booth Ph.D.
Ass't Prof.
h unless I've messed up my math).
Marshall
--
Marshall Booth Ph.D.
Ass't Prof. (ret.)
Univ of Pittsburgh School of Medicine
[EMAIL PROTECTED]
___
http://www.okiebenz.com
For new parts see official list sponsor: http://www.buymbparts.com/
For used par
at and you can cut the gasket. The drain plug torque
(both) is 14 Nm (~10 lb-ft).
Marshall
--
Marshall Booth Ph.D.
Ass't Prof. (ret.)
Univ of Pittsburgh School of Medicine
[EMAIL PROTECTED]
___
http://www.okiebenz.com
For new parts see official list
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