Nick, one of the coil packs failed on my 1995 E320 that's why I mentioned it to you. Suggest you thoroughly clean the spark plug recesses, connectors and ignition wiring when you replace the spark plugs. Then see how the engine runs.

Ask the seller why he/she sold the 1994 E320 for $200. It's likely that a costly repair quote prompted a quick sale. Actually, a local charity would probably have paid $400 or $500 for it.

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Fred Hoelzle