Glow plugs
Destroyed/lacking probe tip

Cause:
- Ignition unit failure.
- Incorrect/irregular fuel jet direction.
- Incorrect number or size of sealing?causing incorrect spraying position.
Remedy:
- Check the?correspondence of ignition unit with the?car type and proper installation of the?ignition unit.
- Check glow plug installation hole for carbon fouling.
Dimples on the probe tip

Cause:
- Ignition unit failure.
- Incorrect/irregular fuel jet direction.
- Incorrect number or size of sealing?causing incorrect spraying position.
Remedy:
- Check the?correspondence of ignition unit with the?car type and proper installation of the?ignition unit.
- Check glow plug installation hole for carbon fouling.
Broken probe tip

Cause:
- Glowing time too long or voltage too high?(12-V glow plug used in the 24-V system?or vice versa).
- Alternator & regulator failure.
Remedy:
- Check glow plug regulator (contacts).
- Check on-board voltage and glow plug?voltage.
- Check charging system voltage.
“Swollen” probe tip

Cause:
- Excessive voltage (12-V glow plug used?in the 24-V system or vice versa)
- Alternator & regulator failure.
- Inappropriate storage (moisture).
Remedy:
- Check on-board voltage and glow?plug operation voltage.
- Check charging system.
- Check storage conditions.
Bulging ring on the probe tip

Cause:
- Oil in the combustion chamber?(probable cause: car engine wear).
Remedy:
- Check piston tightness in engine cylinders.
- Check engine oil consumption.
Probe deformation (due to overheating)

Cause:
- Ignition unit failure.
- Incorrect/irregular fuel jet direction.
- Incorrect number or size of sealing causing?incorrect spraying position.
- Glowing time too long or excessive voltage?(12-V glow plug used in the 24-V system or?vice versa)
- Alternator & regulator failure.
- Injection unit operation/timing failure.
Remedy:
- Check the correspondence of the ignition unit with the car type and?proper installation of the ignition unit.
- Check glow plug installation hole for carbon fouling.?Check glow plug regulator (contacts).
- Check on-board voltage and glow plug voltage.
- Check charging system voltage.
- Check fuel injection timing.
Lacking probe

Cause:
- Ignition unit failure.
- Incorrect/irregular fuel jet direction.
- Incorrect number or size of sealing causing?incorrect spraying position.
- Injection unit operation/timing failure.
- Damaged glow plug installation?hole thread?in the cylinder head/not tightened glow plug?causing incorrect plug seating.
Remedy:
- Check the correspondence of the ignition unit with the car type and proper?installation?of the ignition unit.
- Check the glow plug installation hole thread in the cylinder head for?damage/carbon fouling.
- Check ignition pump timing.
Probe perforation, fissures or melting close to the glow plug body

Cause:
- Ignition unit failure.
- Incorrect/irregular fuel jet direction.
- Incorrect number or size of sealing causing?incorrect spraying position.
- Injection unit operation/timing failure.
- Damaged glow plug installation hole?thread in the cylinder head/not tightened?glow plug causing incorrect plug seating.
Remedy:
- Check the correspondence of the ignition unit with the car type and?proper installation of the ignition unit.
- Check the glow plug installation hole thread in the cylinder head for?damage/carbon fouling.
- Check ignition pump timing.
Probe in contact with the glow plug body

Cause:
- Tightening torque too high.
- Inappropriate tool used or damage?of the cylinder head hole thread.
Remedy:
- Check the cylinder head hole thread?for damage/carbon fouling.
- Check correct glow plug tightening.
333体育(CHINA)官方网站bon fouling between the plug body and the probe glow
官方网站bonFoulingBetweenPlugBodyandProbeGlow-1573553938689.jpg)
Cause:
- Ignition unit failure.
- Incorrect/irregular fuel jet direction.
- Incorrect number or size of sealing causing?incorrect spraying position.
- Ignition pump operation/timing failure.
Remedy:
- Check the correspondence of the ignition unit?with the car type and proper installation?of the ignition unit.
- Check the glow plug installation hole thread in the cylinder head for?carbon fouling.
- Check ignition pump and its timing.
333体育(CHINA)官方网站bon fouling in the glow plug seat
官方网站bonFoulinginGlowPlugSeat-1573553938829.jpg)
Cause:
- Incorrect glow plug seating.
Remedy:
- Check the glow plug installation hole?thread in the cylinder head for?damage/carbon fouling.
- Check correct tightening of the glow plug.
Damaged glow plug hexagon/thread

Cause:
- Tightening torque too high.
- Inappropriate tool used or damage of?the cylinder head hole thread.
Remedy:
- Check the glow plug installation hole?thread in the cylinder head for damage/carbon fouling.
- Check correct tightening of the glow plug.
Power supply terminal bent

Cause:
- Tightening torque too high. Inappropriate?tool used or damage of the cylinder?head hole thread.
Remedy:
- Check the glow plug installation hole?thread in the cylinder head for damage/carbon fouling.
- Check correct tightening of the glow plug.
Power supply terminal broken off

Cause:
- Tightening torque too high.
- Inappropriate tool used or damage of the?cylinder head hole thread.
Remedy:
- Check the glow plug installation hole thread?in the cylinder head for damage/carbon?fouling.
- Check correct tightening of the glow plug
Destroyed/lacking probe tip

Cause:
- Ignition unit failure.
- Incorrect/irregular fuel jet direction.
- Incorrect number or size of sealing?causing incorrect spraying position.
Remedy:
- Check the?correspondence of ignition unit with the?car type and proper installation of the?ignition unit.
- Check glow plug installation hole for carbon fouling.
Dimples on the probe tip

Cause:
- Ignition unit failure.
- Incorrect/irregular fuel jet direction.
- Incorrect number or size of sealing?causing incorrect spraying position.
Remedy:
- Check the?correspondence of ignition unit with the?car type and proper installation of the?ignition unit.
- Check glow plug installation hole for carbon fouling.
Broken probe tip

Cause:
- Glowing time too long or voltage too high?(12-V glow plug used in the 24-V system?or vice versa).
- Alternator & regulator failure.
Remedy:
- Check glow plug regulator (contacts).
- Check on-board voltage and glow plug?voltage.
- Check charging system voltage.
“Swollen” probe tip

Cause:
- Excessive voltage (12-V glow plug used?in the 24-V system or vice versa)
- Alternator & regulator failure.
- Inappropriate storage (moisture).
Remedy:
- Check on-board voltage and glow?plug operation voltage.
- Check charging system.
- Check storage conditions.
Bulging ring on the probe tip

Cause:
- Oil in the combustion chamber?(probable cause: car engine wear).
Remedy:
- Check piston tightness in engine cylinders.
- Check engine oil consumption.
Probe deformation (due to overheating)

Cause:
- Ignition unit failure.
- Incorrect/irregular fuel jet direction.
- Incorrect number or size of sealing causing?incorrect spraying position.
- Glowing time too long or excessive voltage?(12-V glow plug used in the 24-V system or?vice versa)
- Alternator & regulator failure.
- Injection unit operation/timing failure.
Remedy:
- Check the correspondence of the ignition unit with the car type and?proper installation of the ignition unit.
- Check glow plug installation hole for carbon fouling.?Check glow plug regulator (contacts).
- Check on-board voltage and glow plug voltage.
- Check charging system voltage.
- Check fuel injection timing.
Lacking probe

Cause:
- Ignition unit failure.
- Incorrect/irregular fuel jet direction.
- Incorrect number or size of sealing causing?incorrect spraying position.
- Injection unit operation/timing failure.
- Damaged glow plug installation?hole thread?in the cylinder head/not tightened glow plug?causing incorrect plug seating.
Remedy:
- Check the correspondence of the ignition unit with the car type and proper?installation?of the ignition unit.
- Check the glow plug installation hole thread in the cylinder head for?damage/carbon fouling.
- Check ignition pump timing.
Probe perforation, fissures or melting close to the glow plug body

Cause:
- Ignition unit failure.
- Incorrect/irregular fuel jet direction.
- Incorrect number or size of sealing causing?incorrect spraying position.
- Injection unit operation/timing failure.
- Damaged glow plug installation hole?thread in the cylinder head/not tightened?glow plug causing incorrect plug seating.
Remedy:
- Check the correspondence of the ignition unit with the car type and?proper installation of the ignition unit.
- Check the glow plug installation hole thread in the cylinder head for?damage/carbon fouling.
- Check ignition pump timing.
Probe in contact with the glow plug body

Cause:
- Tightening torque too high.
- Inappropriate tool used or damage?of the cylinder head hole thread.
Remedy:
- Check the cylinder head hole thread?for damage/carbon fouling.
- Check correct glow plug tightening.
333体育(CHINA)官方网站bon fouling between the plug body and the probe glow
官方网站bonFoulingBetweenPlugBodyandProbeGlow-1573553938689.jpg)
Cause:
- Ignition unit failure.
- Incorrect/irregular fuel jet direction.
- Incorrect number or size of sealing causing?incorrect spraying position.
- Ignition pump operation/timing failure.
Remedy:
- Check the correspondence of the ignition unit?with the car type and proper installation?of the ignition unit.
- Check the glow plug installation hole thread in the cylinder head for?carbon fouling.
- Check ignition pump and its timing.
333体育(CHINA)官方网站bon fouling in the glow plug seat
官方网站bonFoulinginGlowPlugSeat-1573553938829.jpg)
Cause:
- Incorrect glow plug seating.
Remedy:
- Check the glow plug installation hole?thread in the cylinder head for?damage/carbon fouling.
- Check correct tightening of the glow plug.
Damaged glow plug hexagon/thread

Cause:
- Tightening torque too high.
- Inappropriate tool used or damage of?the cylinder head hole thread.
Remedy:
- Check the glow plug installation hole?thread in the cylinder head for damage/carbon fouling.
- Check correct tightening of the glow plug.
Power supply terminal bent

Cause:
- Tightening torque too high. Inappropriate?tool used or damage of the cylinder?head hole thread.
Remedy:
- Check the glow plug installation hole?thread in the cylinder head for damage/carbon fouling.
- Check correct tightening of the glow plug.
Power supply terminal broken off

Cause:
- Tightening torque too high.
- Inappropriate tool used or damage of the?cylinder head hole thread.
Remedy:
- Check the glow plug installation hole thread?in the cylinder head for damage/carbon?fouling.
- Check correct tightening of the glow plug