PINPOINT TEST A : Loss of Coolant
- A1 CARRY OUT INSPECTION AND VERIFICATION
- Carry out Inspection and Verification. Refer to Engine Cooling .
Were any concerns found?
Yes REPAIR as needed. TEST the system for normal operation. No GO to A2. - A2 CHECK THE ENGINE COOLANT LEVEL
- Ignition OFF.
- Visually inspect the engine coolant level at the degas bottle.
Is the engine coolant level within specifications?
Yes GO to A3. No ADJUST the engine coolant level as necessary. GO to A3. - A3 PRESSURE TEST THE ENGINE COOLING SYSTEM
- Pressure test the engine cooling system. Refer to Engine Cooling .
Does the engine cooling system leak externally?
Yes REPAIR or INSTALL new components. TEST the system for normal operation. No GO to A4. - A4 CHECK THE ENGINE COOLANT FOR AN INTERNAL LEAK
- Inspect the engine coolant in the degas bottle for signs of engine oil.
Is engine oil evident in the coolant?
Yes REFER to Engine System - General Information , Symptom Chart: Engine Performance. No GO to A5. - A5 CHECK THE ENGINE OIL FOR COOLANT
- Remove the oil level indicator from the engine.
Is coolant evident in the oil?
Yes REFER to Engine System - General Information , Symptom Chart: Engine Performance. No GO to A6. - A6 CHECK THE COOLING SYSTEM FOR COMBUSTION GASES
- Using UVU560000-R, following the instructions supplied with the tester, check the coolant for combustion gases.
Are combustion gases present?
Yes REFER to Engine System - General Information , Symptom Chart: Engine Performance. No The cooling system is operational.
WARNING:
Always allow the engine to cool before opening the cooling system. Do not unscrew the coolant pressure relief cap when the engine is operating or the cooling system is hot. The cooling system is under pressure; steam and hot liquid can come out forcefully when the cap is loosened slightly. Failure to follow these instructions may result in serious personal injury.