glow plugs

When did Bosch develop the first glow plugs?

• 1922

• 2006

• 1921

• 1990

What was the normal preheating time for the first series production of Bosch glow plugs?

• Up to 180 minutes

• 2 seconds

• Less than 4 seconds

• Up to 180 seconds

Which Bosch technology reduced the preheating time to less than four seconds?

• Patented regulating heating coil

• Dura Speed

• Dura Term

• Self-regulating ceramic

What is the preheating time of the Dura Speed glow plug introduced in 2006?

• More than 50% reduced

• 2 seconds

• Up to 180 seconds

• Less than 4 seconds

What does the Dura Term glow plug technology utilize?

• Fine-grained ceramic insulating powder

• Twin Viton seals

• A self-regulating system

• A patented regulating heating coil

What are the signs that it might be time to change a vehicle's glow plugs?

• All of the above

• Excessive exhaust smoke after initial startup

• Rough idle after initial startup

• Vehicle won't start

What tools are required for changing glow plugs?

• A torque wrench and an air compressor

• All of the above

• A work light and gloves

• A deep well socket and a socket wrench

What should be used to clean around the glow plugs before removal?

• A deep well socket

• An air compressor

• A torque wrench

• Gloves

What is the consequence of tightening the glow plugs more than the recommended torque?

• It will make the glow plugs last longer

• It could result in damage to the glow plug and engine

• It will improve the efficiency

• No consequence

How can you dispose of old glow plugs?

• In a regular household trash system

• Special hazardous waste collection

• Cannot be disposed of

• Recycling center