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 ..
Body
The body consists of the following:
High-Strength Low Alloy (HSLA), dual-phase (DP) and Boron steels
Aluminum hood
Steel liftgate
Bolted, removable front fenders, hinged doors and hood
Dent resistant steel fenders
Ultra high-strength steel (UHSS) front and rear bumper beam
Underbody components constructed of mild and high-strength steels
Mastic spray-o..