Quote:
Originally Posted by jcyuhn
No reason to stay away from the m273. It has an idler gear where the m272 has the balance shaft, and the idler gear does sometimes have the same problem with wear of the teeth. However the repair cost on the m273 isn't as exorbitant, it can be done without pulling the engine.
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Most MB techs would rather pull a motor to do a balance shaft than R&R the timing chain cover with the engine in the vehicle to replace the idler gear. Re-installing the cover can be a real pain.
