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Q:

My car has some grey emissions and water out the tailpipe, what could it be. on 2000 Chrysler Concorde

Rookie cbe0621eac06868b3efe0d8d1d3611e23c60d3114864ea2ec19a68cfbd3eebab
It tends to shudder almost inperceptibly while idling. Otherwise works great. 63000 miles.
(1) Answer
Sounds like it has a blown head gasket.