M276 Jumped Timing?
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Junior Member
Joined: Apr 2013
Posts: 17
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2001 S500, 1996 E320, 1983 380SL
M276 Jumped Timing?
Just bought a 15 GL450 non running. Has the M276 3.0 Turbo. Previous owner said jumped timing. Had no fault codes but cranks fine but barely runs extremely rough and only runs while holding accelerator pedal for about 5 sec and dies. Live data on my maxisys scanner showed very high fuel pressure (1200-1700 bar). Not much else alarming. Pulled valve and timing covers and found intake right bank cam adjuster skipping. Could this be the cause of all of this and could it have jumped time and bent valves? Planning on replacing adjuster and tensioners next week but dont want to do it all for nothing and the engine be shot. Any ideas
thanks
thanks
Last edited by dale1mercedes; Sep 24, 2022 at 12:38 AM.
Junior Member
Joined: Sep 2016
Posts: 27
Likes: 1
2001 C240
Just bought a 15 GL450 non running. Has the M276 3.0 Turbo. Previous owner said jumped timing. Had no fault codes but cranks fine but barely runs extremely rough and only runs while holding accelerator pedal for about 5 sec and dies. Live data on my maxisys scanner showed very high fuel pressure (1200-1700 bar). Not much else alarming. Pulled valve and timing covers and found intake right bank cam adjuster skipping. Could this be the cause of all of this and could it have jumped time and bent valves? Planning on replacing adjuster and tensioners next week but dont want to do it all for nothing and the engine be shot. Any ideas
thanks
thanks
