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· Registered
01 C240 AT
270 Posts
Discussion Starter · #1 ·
I use stethoscope (no stick, kind of like medical one) to find vacuum leaks and found a few air sucking sound sources around throttle body area.
Any common vac. leaks?

· Coupe/Convertible Forums Moderator
CURRENT: 2011 SL550 FORMER: C300, ML350, CLK550 Cabriolet, C240, ML320, 300TD
25,462 Posts
Given the age of your car, suspect every rubber hose and seal on the intake. breather hoses, the brake booster hose, the T-hose on the throttle body, and seals around the MAF sensor - all suspect. I just replaced them all on mine.
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