Excessive lube oil consumption in a diesel...

Question 1 of 270705eccefa1bacbc34ba4d4758a

Excessive lube oil consumption in a diesel engine can be caused by __________.

Back

Question 1 of 27070

Q

Excessive lube oil consumption in a diesel engine can be caused by __________.

🔍 Key Concepts

• Lube oil control in diesel engines — what parts keep oil from entering the combustion space? • Piston ring functions — especially the difference between compression rings and oil (wiper) rings. • Symptoms of oil burning vs. pressure/temperature problems in a lube system.

💭 Think About

• Which component’s failure or blockage would allow more lube oil to get into the cylinder and be burned? • Do low oil pressure or low oil temperature, by themselves, usually make the engine use more oil or just affect lubrication quality? • Which option directly affects how much oil is scraped off the cylinder walls on each stroke?

✅ Before You Answer

• Identify which choice is directly related to oil control at the piston/cylinder walls. • Decide which choices mainly affect combustion timing or lubrication quality, not the amount of oil consumed. • Ask: which condition would cause oil to pass into the combustion chamber and burn, producing blue smoke from the exhaust?