OM602 Injection pump problem

[alghamedGT]

Hi folks i hope you all doing fine


i have a problem no i mean my friend has a problem


he has a nice 1992 w201 2.5d with 300k km


recently he had some vibrations in the engine and a Stupid mechanic has found that the injector n° 3 dont fire at all in idle so he open the side of the injection pump and done something to fix the prblm and he fixed it but now the car runs horribly


after that my friend decided to replace the injection pump and its not worth the hassels to repair it because in our country Unfortunately we dont have specialistes or a bosch cerified mechanic . nothing


if something broke its better to replace it


Luckily a friend of us has 3 used pumps for dirt cheap


PES 5 M 55 C 320 RS 177


PES 5 M 55 C 320 RS 193


PES 5 M 55 C 320 RS 170


and the car had : PES 5 M 55 C 320 RS 173


so we take the friend advice and choosed the 170 pump he told us that its for the older models



now the car runs great and very smooth but again it had some issus of course

the pump jurks in about 1100 rpm and the idle speed drops alot from 800 to about 400 rpm when turning the wheel or turning the headlights and accessories.


sometimes even stalls when turning the wheel to lock
and the power is slightly low but no smoke at all


i think thats isnt normal


the timing is set right 15° atdc and new 261 injectors installed


now for the questions :
is the pump is faulty or its just some adjustments can solve it ?
and if we must changed it what pump to choose ? 177 or 193 or 170 or we searche another one ?


and for my curiosity what happend to the old one can we repair it ?


i learned a great lesson :


dont let anyone not qualified to touch your injection pump it can coste you alot


now for the videos :


the older 173 pump


the older 173 pump smoking very bad


the older 173 noise and shaking


the newer 170 pump noise at 1100 rpm


the idle droping when turning the the steering to lock