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#1
10-20-2007, 04:26 PM
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clacking sound after
changing the spark plugs on my 95 E320. It was loud at first. I checked the spark plug wires and started the car again and the sound is still there but less loud. Noise increases in speed when engine speed is increased, at the same time, actual noise decreasing. Sounds like a "clacking" sound
 Did debris fall into one of the spark plug holes?? I was very careful by blowing out any dirt out before removing the plugs. Also, it has been said that iron cores of some Bosch ignition coils are poorly glued and would need to be replaced with a different production code part. Is it possible to damage the leads/coils when servicing the plugs?? the car has 56,000 miles. 
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#2
10-20-2007, 09:55 PM
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Did you happen to rotate the engine backwards at any time when you were working on it? That can slacken the timing chain tensioner. I also had an E320 and I can see how some debris could fall in but how did the debris get in to the spark plug cavity in the first place?
Did you check all of the old plugs to see if anything broke off of any of them?
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My Truck.. 2007 DODGE, 5.9 Cummins, 6spd stick, 4X4. My car..1977 240D, OTHER WHEELS...1955 VW Oval window bug, European Delivery (Holland) with a 1700cc, 2 barrel, Porsche drum brakes. 1939 WILLYS Pick-up. 1967 Triumph 200cc Tiger Cub. 1976 Honda 550F 4cyl Motor Cycle.
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#3
10-20-2007, 11:24 PM
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Wow,,, a 95 with 56K.
 It must be a nice one. Please,,,, if you can't find the problem, take it to a professional. That car has too many miles left in it to not take care of it properly. Would love to see it.
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95 SL500 Smoke Silver, Parchment 64K 07 E350 4matic Station Wagon White 34K 02 E320 4Matic Silver/grey 80K 05 F150 Silver 44K
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#4
10-21-2007, 09:30 AM
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I think I damaged a coil pack
 I have to fess up to it. First time working on the car, I misstook one of the corners (where it looks like a screw access)of the coil pack as a attachment screw and broke a small tip off it. No, the broken piece did not fall into the spark plug hole, but I get the feeling this might be creating my problem. I played around with it a bit more and the noise quieted down but is still there. I will check again today.
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#5
10-21-2007, 03:34 PM
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Dropped it off at the indi. Will have to wait till Monday...
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