OM 651 getting louder and louder
Thread Starter
Senior Member
Joined: Dec 2016
Posts: 343
Likes: 43
E250 Diesel
OM 651 getting louder and louder
My engine, 2.5 liter inline 4 diesel, has gotten considerably louder over the years (now at 73K). I understand the typical explanation is typically that cars get noisier over time. (water pump, steering pump, A/C compressor...... they all age and make more noise)..... however, in my case, the diesel "click clack" is getting louder over time. Except for the turbo boot being cracked for no reason about 20K miles ago, it's been a trouble free engine.
Is this normal for diesel to get louder over time? According to my mechanic, the engine on my car is in excellent shape. What kind of things can I do to bring this back to newer and somewhat quieter condition?
Is this normal for diesel to get louder over time? According to my mechanic, the engine on my car is in excellent shape. What kind of things can I do to bring this back to newer and somewhat quieter condition?
Junior Member
Joined: May 2014
Posts: 34
Likes: 2
From: Ontario, Canada
2008 E320 Bluetec | 2011 Dodge Durango Citadel | 1965 Mustang Coupe 289 | 2015 Triumph Speedmaster
Besides timing chain adjuster possibility, maybe some of the sound proofing in and around the engine bay has been removed or come loose. There are some foam padding under the engine cover around the injectors/glow plugs and insulated splash panels under the engine that help to reduce clatter.
