Glow Plug: Description
CAUTION:
The glow plug system is a 7 volt system. The glow plugs DO NOT tolerate any over voltage. DO NOT test the glow plugs with a 12V jumper as damage will occur to the glow plug.
NOTE:
Glow plugs are very sensitive concerning impact load and bending. Any glow plugs that are dropped or have fallen must be discarded despite testing and no damage being visible.
Glow plugs are used to help start a cold or cool engine. See Fig 1. The glow plugs will heat up and glow to heat the combustion chamber of each cylinder. An individual glow plug is used for each cylinder. Each glow plug is threaded into the left side of the cylinder head below the cylinder head cover/intake manifold.