W124

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Help solve this mystery: how did my transmission problems go away?

The transmission in my 1987 300TDT diesel wagon (W124) has always shifted a bit harshly, especially going from second to third gear, and from park to drive. After I installed new Monark injector nozzles, Beru glow plugs and cleaned out the oily gunk from the intake manifold, the transmission now shifts smoothly. It's like I installed a new transmission, but I didn't.

So which of these procedures (inadvertently) solved my clunky transmission? I'm sure it wasn't new glow plugs!

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1990 300D Air blowing out of rim of injection port???

I noticed, recently, that there was what sounded like an exhaust leak in the engine compartment of my 1990 300D 2.5 turbo. In checking further, I found that the noise was on the intake side of the engine not the exhaust side. Checking further, I found that puffs of air(?) were coming out of a small half-moon shaped hole on the rim of the injection port of the last fuel injector (closest to the firewall). I bought your injector rebuild/test kit (monarch nozzles) and rebuilt all of the injectors and reinstalled them.

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124 Wagon - Removing the self leveling system

I own W124 230TE but the sls is not working for the last 6 month or maybe more, i try sending it to the workshop but end paying more $$$ but still no success, end up the system getting worst, i check & found the actcuator & the adjusting valve broken & missing. Now it just on the coil spring, with 2 adult seating at the rear the whole back sink down, the problem here is very difficult to get the part localy (Singapore)& costly to import the part.

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