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Geoff’s Quick Check List for Diesel Engines
 
 
Misfiring Poor Idle High Exhaust Back Pressure
  • air in fuel lines   • plugged fuel filters   • plugged exhaust / turbo
  • plugged fuel filters   • dirty fuel   • kink in exhaust hose
  • dirty fuel   • defective injectors   • closed sea cock
  • defective injectors   • poor fuel quality  
  • poor fuel quality   • injection pump leaking by Low Oil Pressure
  • injection pump leaking by   • injection timing advanced   • oil level low
  • injection timing advanced   • piston blow by   • wrong viscosity oil
  • piston blow by   • dry cylinder walls   • diesel dilution of oil
  • dry cylinder walls   • valve blow by   • dirt in oil pressure relief valve
  • valve blow by   • decompressors levers on   • defective pressure gauge
  • decompressors levers on   • valve clearances wrong   • plugged oil filter
  • valve clearances wrong   • valves sticking in guides  
  • valves sticking in guides   • govenor sticking loose linkage Rising Oil Level
  • plugged air filter   • govenor idle spring too slack   • diesel dilution of oil
  • blown head gasket  
  • blown head gasket
 
Loss of Power   • water in oil
Hunting   • lift pump diapram holed   • heat exchanger leak
  • govenor sticking loose linkage   • plugged fuel filters  
 
  • air in fuel lines Excessive Oil Consumption
Overheating   • dirty fuel   • piston blow by
  • too much fuel injected   • defective injectors   • wrong viscosity oil
  • valve blow by   • poor fuel quality  
  • oil level low   • injection pump leaking by Seizure
  • defective water pump   • injection timing advanced   • oil level low
  • defective pump vavles   • piston blow by   • wrong viscosity oil
  • air bound waterlines   • dry cylinder walls   • diesel dilution of oil
  • closed sea cock   • valve blow by   • defective water pump
  • plugged cooling system   • decompressors levers on   • defective pump valves
  • blown head gasket   • valve clearances wrong   • air bound waterlines
  • uneven load on cylinders   • valves sticking in guides   • closed sea cock
  • seized piston   • plugged air filter   • plugged cooling system
  • engine overload   • plugged exhaust / turbo   • blown head gasket
 
  • kink in exhaust hose   • uneven load on cylinders
 
  • worn bearings   • engine overload
 
  • auxiliary equipement engaged  
 
  • engine overload  
 
 
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