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Old 10-06-2015, 06:37 PM
Benz Mondi Benz Mondi is offline
Benz Mondi
 
Join Date: Nov 2006
Location: Sacramento area
Posts: 308
No worries

Quote:
Originally Posted by joe_pau View Post
Thanks for all the great information. Is this something to be concerned about? If yes, what would be your next move?
Unless you have a leak in the interior of the cabin, I wouldn't worry about it. I have experienced this sound with other brand cars as well. You likely have a small air leak in your coolant system that is drawing in some air, causing the bubbling sounds. As long as your (heat/cooling) systems are working properly, I'm sure you have other more pressing concerns.
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03 CLK430 Cabrio 211K Pweter Silver/ Oyster Leather
90 300SEL 214k Pearl Black/ Alto Grey/Black Leather

Prior: 85 190E, 88 300TE, 89 300TE, 90 300E 2.6, 90 300TE, 92 300E 2.6, 91 and 93 300SL, 87 Ferrari Mondial Cabrio
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