superleggera
New Member
Hello all!
My car is still in and out of the local indy specialist- the vacuum pump went and took the ramp gear that drives it with it. All been replaced but now it's got timing issues. The guys have put everything back according to the specs in the Mercedes manuals, for an OM606 engine it's 15deg +-1deg but it now suffers massive diesel knock/valve clatter rolling on to the throttle with virtually zero engine load.
The guys think that the gear, which is made of two parts that extend via centrifugal force/weights (bit like an old starter motor) according to engine speed, perhaps might need to be installed with some amount of compensation taken into account for the final timing etc. They don't want to keep taking it out and changing it because it's a big job and they haven't got the manpower. They have over 20 years Merc main dealer experience, they've called other dealers and no-one seems to know, there's a bit of a blackout of info as far as these E300D W124s go.
Does anybody know what this might be? Is there some sort of compensation or does it just go in at 15 degrees?
Any help would be much appreciated, it's my only car and I need it back asap!
My car is still in and out of the local indy specialist- the vacuum pump went and took the ramp gear that drives it with it. All been replaced but now it's got timing issues. The guys have put everything back according to the specs in the Mercedes manuals, for an OM606 engine it's 15deg +-1deg but it now suffers massive diesel knock/valve clatter rolling on to the throttle with virtually zero engine load.
The guys think that the gear, which is made of two parts that extend via centrifugal force/weights (bit like an old starter motor) according to engine speed, perhaps might need to be installed with some amount of compensation taken into account for the final timing etc. They don't want to keep taking it out and changing it because it's a big job and they haven't got the manpower. They have over 20 years Merc main dealer experience, they've called other dealers and no-one seems to know, there's a bit of a blackout of info as far as these E300D W124s go.
Does anybody know what this might be? Is there some sort of compensation or does it just go in at 15 degrees?
Any help would be much appreciated, it's my only car and I need it back asap!