Pinpoint Test A : Loss Of Coolant
WARNING: This page is about a different car, the 2016 Ford Fusion. However, it is still accessible from the selected car via links, so may be relevant.
- 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.
- A1 PERFORM INSPECTION AND VERIFICATION
- Perform Inspection and Verification.
Are any concerns present?
Yes REPAIR as needed. No GO to A2 - A2 CHECK THE ENGINE COOLANT LEVELNOTE: Allow the engine to cool before checking 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 Cooling System Pressure Test .
Does the engine cooling system leak externally?
Yes REPAIR or INSTALL new components. 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 . 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 . No GO to A6 - A6 CHECK THE COOLING SYSTEM FOR COMBUSTION GASESNOTE: Use UView ® Combustion Leak Tester part number UVU560000-R or equivalent.
- Using a cooling system combustion gas leak tester, following the instructions supplied with the tester, check the coolant for combustion gases.
Are combustion gases present?
Yes REFER to: Engine . No The cooling system is operational