Operation CHARM: Car repair manuals for everyone.
Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

(Some people have issue connecting. LEMON is investigating. For now, use Firefox or change your DNS server)

Or, hide this message: temporarily or permanently

Glow Plug: Testing and Inspection

Fig. 33 Glow plug test connections:





1. Remove glow plugs and apply battery voltage to plug as shown in Fig. 33. Plug should glow after about 15 seconds. If not, replace glow plug. Do not continue to apply voltage to glow plugs after they start glowing.