Quote:
Originally Posted by rwenzing
Be sure to check the Synchronizer/CMP sensor under the rear of the upper intake to see if it is the source of the leak. The shaft inside the Synchronizer can get sloppy at higher miles causing the drive gears to fail. When they do, the engine oil pump will stop turning and that is never a good thing.
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You know, this could have something to do with why they fail. If the sync assembly starts to leak oil where it mounts to the block, and not enough oil reaches the bearings, then there's the possibility of a lack of lubrication to the bearings, which then heat up and wear out, allowing the shaft to wobble. Of course, it could still be that it's just a poor design, but you never know.