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Visual Characteristics Of Ceramic Sheathed Element Glow Plugs

CAUTION:

Ceramic sheathed element glow plugs are susceptible to shock and bending. For this reason, do not use sheathed element glow plugs which have been dropped (even from a height of approximately 2 cm) under any circumstances, even if no visible damage can be detected. Always follow the installation instructions in sequence. Otherwise the glow plug could break and cause other damage to the engine.

Fig 1: Identifying Ceramic Sheathed Element Glow Plugs & Metal Glow Plugs
GWWN28-10022Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

A - Ceramic sheathed element glow plugs, phased stepping on the tip (see magnified area), white color coding -arrow-

B - Metal glow plugs, green color coding -arrow-

Ceramic sheathed element glow plug removing, installing and checking. Refer to CERAMIC SHEATHED ELEMENT GLOW PLUGS .