x3

I agree. I am not making any conclusions. Just preparing for the worst.

I am very familiar with german gasser construction. It is very rare for a major component to fail on a gasser as well, unless someone unknowingly futz'd around.

This car is new in the stable and I am sure has had many hands touching it over the years. Therefore i cannot assume the health of any component.

I appreciate the feedback and i am more than willing to continue diagnosing than conclude the injection pump is faulty.

Please keep the suggestions coming.

Thanks again

I believe the PO told me it stopped suddenly

Peek into the oil filler hole in the valve cover while the engine's turning. Do the cam lobes turn in time (or half time) with cranking?

Sixto
87 300D

After Phil's help today, I have decide to part the car. It seems the car may have a cracked head. Right now I do not have the desire to chase any further. I have other 126s that need parts and would rather follow this route.

Thank you Phil !!

Please email me with any requests

The car:

1991 350SD 040 Black/ Palomino 144k

#17 and later castings don't usually crack but anything is possible. It might be worth selling the car intact to someone with an idle 3 liter block.

Sixto
87 300D

We tried bleeding the injectors and that didn't work after maybe 8-10 tries at 5 seconds on the starter with the battery hooked up to a charger which gave a good strong constant charge. No fuel ever wet the tops of the injectors.
Then on my last try I saw that when the car is cranking over you can see bubbles seeping past the outside of the #2 cylinder prechamber. Once I saw that I showed Kushal and said if we can't make any compression we're just wasting time. We never did see which head casting it was but the bubbling was obvious so we called it a day.
The injector and prechamber were torqued in the head tight, not obviously loose. I don't have the tool for that prechamber either.

Thanks for the burgers, Benz contacts and good conversation!

Folks, this car is quite nice and would be a great ride for anyone who has a reliable working motor.

Phil Forrest

__________________
1972 220D "Trudy," named by a friend.

"The 220D sounds good... I suspect it is the only car that you need a calendar for, rather than a stopwatch, when doing acceleration tests."
Tom Abrahamsson

Before calling anything bad will the engine run on wd 40? I am not quite clear but it sounds like no fuel basically still.

To me a little more effort seems to be indicated. Especially as it seems a decent car.

A used injection pump from an auto wrecker even if it came to that is really not that big of a deal. Was the garage you purchased it from a Mercedes diesel familiar shop or a run of the mill place?

If run of the mill the injection pump may be fine. I have seen more than one mechanic unfamiliar with these cars jump to the wrong conclusion.