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Old 06-15-2007, 08:51 AM
lorenztl's Avatar
lorenztl lorenztl is offline
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Join Date: Dec 2002
Location: Iowa, USA
Posts: 116
Thumbs up Rack Dampner shake

Quote:
Originally Posted by networkboy View Post
Right,
So I have a drivable martini shaker of a car.
-nB
From your symptoms you may have the classic rack dampner shake. My 1985 300D experienced the same symptoms and became worse as the engine reached operating temp. My wife hated the martini shake....and she doesn't drink. She said our son in the back seat was moving up and down.
I initially replaced the injectors with new which resulted in no perceptable change and was becoming disgusted.
Recently, after further research of this great forum, I adjusted the rack dampner bolt in or screwed it nearly all the way in, thus the shake was 95% eliminated. Indications are the spring inside the rack dampner bolt weakens and the bolt needs replacement. A new rack dampner bolt has a stouter spring to elimate the shakes totally.
Previously before I adjusted the rack dampner bolt, the engine idled smooth when first started and became progressively rougher or shakier as it warmed up. Use the link below for great photos and written description how to eliminate the shakes with the rack dampner bolt adjustment....very simple.
http://articles.mbz.org/engine/diesel/rackbolt/

Best Regards!!!
__________________
'96 C220 138,000mi, '95 E300D 239,000 mi., '87 300TD 214,000mi '88 6.2 Turbo Diesel Chevy Conversion Van 253,000 mi.

Last edited by lorenztl; 06-15-2007 at 03:35 PM.
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