Other information:
Inspection
NOTE:
Dropped spark plugs should always be discarded.
Unfired
An unfired spark plug should appear very clean
with a pure nickel finish to the threads and ground strap. The center
electrode ceramic insulator surface is often a matte or dull finish and
pure white in color. The external primary insulator is often a polished
white ceramic with appropriate stamping ..
Repair
NOTE:
Mouldings located on the front and rear window frames may
experience minor scratches from vehicle shipment or car wash racks. The
imperfections may be repaired instead of replacing components by
following the steps below.
NOTE:
Scratches deep enough to cause a thumb nail to catch cannot be repaired and the component must be replaced.
Clean with a mild soap and wate..