W123

1983 300D Turbo Boost Improvement Next Steps

At ca. 154,000 miles I have been slowly bringing the engine performance back to snuff. I recently rebuilt my turbo using your excellent kit. The compressor and turbine blades and shaft were in excellent condition so I opted not to purchase the replacement set.

Prior to the rebuild my boost pressure at 4000 rpm was 9 psi. Following the rebuild, there was no improvement in boost pressure. Per your instructions, I tested the waste gate (with a bicycle pump) and it appears to work.

The ALDA tube and Banjo bolt are clean; I've installed a new air filter, adjusted the valves following your instructions, installed rebuilt Monarch fuel injectors, and did a diesel engine purge (which was clean) and replaced the fuel filters.

Chassis Model Number

W123

Forums

Diesel Engine Specific Aid

loud clinking sound near belts in 1985 300td wagon

driving home yesterday and started to hear some clinking in the engine...not that unusually, then a little more, became on and off, almost as if metal was dragging on the ground...then became a permanent loud noise....i pulled over and while the sound is a tocuh louder when i accelerate it is there regardless...seems to be coming from near all the belts...any suggestions welcome...thank you....

Chassis Model Number

W123

Forums

Diesel Engine Specific Aid

1984 300 CD Rear Bumper Corrosion

removed the rear bumper and associated rubber trim pieces because the black trim piece running the length of the bumper was loose. Further investigation revealed it's time to conduct some corrosion control on all the metal parts.

Looking inside the bumper one bumper shock has separated from the bumper. I plan to just drill holes and bolt the bumper and shock back together. However, the bumper is severely corroded where the bumper and bumper shock contact, possibly a case of dissimilar metal contact.

Chassis Model Number

W123

Forums

Body and Interior Specific Aid

83 300D Transmission Shift Problems ??

Everything on my car works great except the auto trans and I am by passing that problem by shifting manually.
Question to you "am I doing any damage" by not allowing trans to shift automatically?
Right now, 1st gear shifts out quickly below 10mph, 2nd shifts at 18mph with a huge flair and 3rd shifts a little firm.
What I have been doing is keeping 1st in gear until 17mph (high revs)then manually shifting to 2nd and the shift is smooth as can be! Shift into 3rd manually is around 35mph (high revs)also smooth as silk and then we are off to the races and as long as it's in high gear it will run all day without any problem.
What is your take on what I'm doing as far as future problems being created.

Chassis Model Number

W123

Forums

Transmission / Suspension Specific Aid

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