For 1990-2009 cars

Step | Action | Yes | No
--- | --- | --- | ---
1 |

1. Check for an external coolant leak.
2. Perform a pressure or dye test.

Is the cooling system to the proper pressure?

Go to Step 2

Go to Step 3

2 |

1. Check for an internal coolant leak.
2. Perform a cylinder leak test.

Is there an internal loss of coolant?

Go to Step 3

--

3 | Repair the cooling system components as necessary. Is there still a loss of coolant? | -- | System OK