Checking and replacement of the spark plugs All gasoline engines (USA and Taiwan only) - wh1550pkw0000x(1550)

WARNING: This page does not describe the selected car, but rather 42 other vehicles, including the 1999 Mercedes-Benz S600, 1999 Mercedes-Benz S500, 1999 Mercedes-Benz S420, 1999 Mercedes-Benz S320, and 1999 Mercedes-Benz CL600. However, it is still accessible from the selected car via links, so may be relevant.

Models 107 from 8/85, 123, 124, 126 from 9/85, 129, 140 to 6/93, 201 from 1/85

Fig 1: Identifying Spark Plugs

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Before removing the spark plugs, blow out spark plug wells in cylinder head.
Spark plugs	remove, install (see Replacement of the spark plugs Gasoline engines ). Check for deposits (visual check). If deposits are present on electrodes, replace spark plugs.
Spark gap	check, adjust, if required, specified value 0.8 mm.

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