Diagnostics of faults
![](https://www.brisk.eu/content/uploads/2015/07/ZhaviciSer-02a.jpg)
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