Quote:
Originally Posted by dkr
That's pretty crazy. There are tons of people who have hit 400,000 or more miles on the original vacuum pump. This story is the exception not the rule.
How do you know the issue is not age-related more than number of miles? Where do you get 130K as some type of "common-sense" metric?
I wonder if it would help to just install a vacuum gauge and look at it from time to time. I would presume if the pump was going downhill, the vacuum would drop over time like if the bearings were to go out.
Dkr.
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I have noticed from reading the various mercedes fourms that people with similar milage often have different degrees of timing chain stretch. My best guress is that the forumer owners that changed their oil regularly helped keep the wear on the timin chain and gears down. The same may apply to wear on the timer bushing.
Vauum Pumps seem to gernade suddenly. Some times you get some warning in the form of a metalic ticking sound. If you hear that sound pull over and determine where the sound is coming from.
The people who have had engines that survived serious damage from a gernading vacuum pump have usually be people that started the Engine and started moving at low speed and had the vacuum pump go out.
Who has or knows someone that has experienced a timing chain breakage/failure?
Who has or knows someone that has experienced a timing chain breakage/failure?