Pinpoint Test A: Pinpoint Test
WARNING: This page is about a different car, the 2021 Ford Mustang. 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 CARRY OUT INSPECTION AND VERIFICATION
- Carry out Inspection and Verification .
Are any concerns present?
Yes REPAIR as needed. No GO to A2 - A2 CHECK THE ENGINE COOLANT LEVEL AND PRESSURE TEST THE ENGINE COOLING SYSTEMNOTE: Allow the engine to cool before checking the engine coolant level.
- Ignition OFF
- Visually inspect the engine coolant level at the degas bottle and adjust as necessary. 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 A3 - A3 CHECK THE ENGINE COOLANT FOR AN INTERNAL LEAK
- Inspect the engine coolant in the degas bottle for signs of engine oil or transmission fluid.
Is engine oil evident in the coolant?
Yes REFER to: Engine No GO to A4 - A4 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 A5 - A5 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.