Cooling system

• Through hulls

• Seacocks

• Belt tight

• Raw water strainers

• Water pumps

• Impellers

• Heat exchangers 

• Exhaust elbows 

• Exhaust hose

Fuel System

• Deck fills

• Vents

• Grounding ?

• Tanks

• additive

• Water

• Bio

• 2nd filter water separator 

• Primary

• Leaks

• Vac gauge

• Air

• Blockage

• Injectors

Electrical System

• Batts

• Connections

• Charging

• Starters

• Jumping

 Cooling system

Fuel System

• Deck fills

• Vents

• Grounding ?

• Tanks

• additive

• Water

• Bio

• 2nd filter water separator 

• Primary

• Leaks

• Vac gauge

• Air

• Blockage

• Injectors

Electrical System

• Batts

• Connections

• Charging

• Starters

• Jumping
  
  

Impeller change

Filter change

Strainer cleaning

Jump method (battery)

Bleed fuel 

Questions

https://www.safe-skipper.com/boat-engine-cooling-systems/