PPD semifinal quiz

What is a common cause of low compression pressure in marine engines?

• Faulty sensors

• Blocked air filters

• Excessive fuel pressure

• Worn piston rings

What effect does piston scuffing have on an engine?

• Reduced engine noise

• Scored piston surfaces

• Improved power output

• Increased fuel efficiency

What is an indication of crankshaft misalignment?

• Black smoke in exhaust

• Increased fuel consumption

• Low oil pressure

• High vibration levels

What can cause turbocharger overspeed?

• Blocked heat exchangers

• Faulty fuel injectors

• Low oil levels

• Excessive exhaust gas pressure

What is a common indication of oil starvation?

• Low fuel pressure

• Erratic engine performance

• High engine temperature

• Increased exhaust smoke

What effect does overheating have on an engine?

• Increased power output

• Potential damage to pistons

• Reduced engine noise

• Improved fuel efficiency

What is a common cause of clogged fuel injectors?

• High coolant levels

• Faulty alternator

• Excessive lubrication

• Dirty fuel

What can indicate a malfunctioning ECU?

• Warning lights

• High oil pressure

• Low fuel consumption

• Increased engine temperature

What is a common cause of excessive engine vibration?

• Faulty fuel pump

• Low oil levels

• Shaft misalignment

• Blocked air filters

What does blue smoke from the exhaust typically indicate?

• Oil burning

• Water in the fuel

• Incomplete combustion

• Excessive engine load