1 FULLY FUNCTIONAL PLUG

2 INTERRUPTED ELECTRICAL CIRCUIT

Potential causes

– fault in on-board electrical network
– regulator relay failure
– incorrect type of glow plug

3 HEATING AT AN INCORRECT SPOT

Potential causes

– tightening torque too high
– mechanical damage

4 MELTED GLOW TUBE

Potential causes

– regulator relay failure
– fault in on-board electrical network
– injector fault

5 MELTED GLOW TUBE

Potential causes

– oil in combustion chamber
– injector failure