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Old 07-10-2000, 05:20 PM
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Join Date: Jun 2000
Posts: 35
Been reading thru the archives, but still have questions:

When warm, my 83 300CD will shake a lot at idle and after 10-15 secs. mostly stop shaking.

The 12mm dampener screw shows no threads between it and the 14mm jam screw between it and the inj. pump. So, looking at how close the oil canister is to the back of the pump, do I have to remove the canister to replace the dampener screw?! If so, is this relatively easy or tricky? Incidentally, the car started this shaking a couple of months ago and there has been no engine maintenance for 4-5 mos.

Looking for some insight. Thanks!
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Old 07-10-2000, 07:04 PM
shoe's Avatar
Senior Member
Join Date: Jun 2000
Location: Baton Rouge, LA.
Posts: 583
I just replaced the idle dampener screw on my 83 300D it was a piece of cake. Just change it while the engine is NOT running. You do not have to remove the oil cannister it will just edge out. you will probably find it is concave instead of convex, if so replace it. Just make sure you get a new o-ring too. When reinstalling it screw it in about 2 turns after you feel it hit the idle buffer spring. then start your engine let it warm up completly, then with engine at idle back out on the screw until the engine start idle starts to drop, then go back in until your idle smooths out. If you have not tried to fix the idle by raising the base idle this should work.

Keith Schuster
83 300D
auto\hydraulic mechanic 20 yrs
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Old 07-11-2000, 01:34 PM
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Join Date: Jun 2000
Posts: 35
This makes it much clearer, especially good not to have to remove the canister. Thanks alot!
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