hi how is it goin everybody,

i have a trouble with my MB SLC 1975 2.8. the engine seems to run very roughly and it seem like one valve isnt working... checked everything and changed starting from spark plugs, cables and cap, but still i have this problem.. what could be wrong?? and today i drive on the road and suddenly the car died and everytime now i start the engine doesnt run in neutral gear it dies and the oil pressure is shows high level- 3. does anyone know what could be wrong there??

thanks in advance

 

Just a quick shot from a far distance, but did you check the fuel supply to the engine? When was the fuel filter (it's located near the fuel pump in the back, behind the rear axle, right hand side) last changed.

A clogged fuel filter can lead to the symptoms you state.

You can also check fuel pump delivery to your engine, this is not difficult. I don't have the specs for the M110 engine here, but can look it up for you.

 

check the oil.