Engine dies when it's revved up.
Has anyone come across similar problem, engine starts and runs perfect but when you rev it up 4000ish engine dies and stops when you crank it over sounds like no compression gradually builds up and starts again and runs perfect? As the engine slows down back is felt coming back through inlet, have checked exhaust blockage ok, checked EGR valve and control solenoid ok, checked turbo ok, only fault i,ve found checked oil pressure it should be 3.8 to 4 bar at 3000 revs but this car 4 bar on tick-over but when it is revved up to 3000 oil pressure is 6 bar plus is that to much? as engine dies oil pressure goes down but i'm not sure if that's just because it is slowing down? I had a very similar problem once on a golf diesel P D type engine and it turned out to be camshaft had worn through hydraulic follower stopping valves from opening. any ideas?