Cleaning; Inspection - Mercury MerCruiser D2.8L D-Tronic Service Manual

SERVICE MANUAL NUMBER 22

Cleaning

1. Clean contact area of connecting wire ring terminals.
2. Clean the power supply wire terminal end.
3. Clean cylinder head glow plug seat area.
4. Clean the glow plug threaded areas, seat and heating element (tip).

Inspection

1. With glow plug removed, connect ohmmeter between glow plug terminal (+) and glow
plug external (–) threads. Continuity should exist. If no continuity exists, glow plug is
faulty.
2. Connect a VOM and check resistance between glow plug terminal (+) and glow plug
external (–) threads. Refer to Specifications for value.
Typical
90-860074--1 FEBRUARY 2002
a - Terminal (+)
b - External Threads (–)
a
73198
b
GLOW PLUG SYSTEM
Page 4C-7