Testing
Glow Plug Test
Be careful while handling or testing glow
plugs. Glow plugs become extremely hot. Ac-
cidental contact with the heated plug tip could
cause personal injury.
CAUTION
1. Disconnect the wire lead(s) to the glow plug.
2. Remove the glow plug.
3. Inspect the glow plug for signs of a burnt glow plug
end tube.
NOTE: If the metal of the glow plug end is melted, it is
a sign of cylinder overheating. (See Engine Overheats
in the Troubleshooting section of this chapter.)
4. Connect the positive (+) battery terminal to the glow
plug terminal, and the negative (–) battery terminal to
the plug body (Fig. 15). If the glow plug glows red-hot,
the glow plug is operating correctly.
5. Replace
any glow plugs that do not operate correctly.
Figure 15
Testing Page 3 - 18 Reelmaster
®
223-D/5100-D
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