Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
1 | Check for a leaking radiator. Refer to Cooling System Leak Testing . Is the radiator leaking? | -- | Go to Step 2 | Go to Step 3 |
2 | Repair or install new parts as necessary. Is the repair complete? | -- | System OK | -- |
3 | Check for a leaking heater core. Refer to Cooling System Leak Testing . Is the heater core leaking? | -- | Go to Step 4 | Go to Step 5 |
4 | Check for a faulty surge pressure cap. Is the cap operating properly? | -- | Go to Step 5 | Go to Step 2 |
5 | Check for a leaking surge tank hose(s), a cracked surge tank or a nicked surge tank neck. Refer to Radiator Surge Tank Replacement . Is the reservoir or the hose leaking? | -- | Go to Step 2 | Go to Step 6 |
6 | Check for any loose or damaged hoses and connections. Are any hoses damaged or are any hose connections leaking? | -- | Go to Step 2 | Go to Step 7 |
7 | Check for a cracked thermostat housing or a leaking thermostat seal. Refer to Engine Coolant Thermostat Replacement . Is the thermostat housing cracked or is there a seal leak? | -- | Go to Step 2 | Go to Step 8 |
8 | Check for a cracked water pump or a leaking water pump gasket. Is the water pump cracked or is there a leaking gasket? | -- | Go to Step 2 | Go to Step 9 |
9 | Check for a cracked water pump shaft seal. Is the water pump shaft seal leaking? | -- | Go to Step 10 | Go to Step 11 |
10 | Replace the water pump. Refer to Water Pump Replacement . Is the repair complete? | -- | System OK | Go to Step 11 |
11 | Check for a leaking engine block coolant drain hole plug or knock sensor. Are any drain hole plugs or knock sensors leaking? | -- | Go to Step 2 | Go to Step 12 |
12 | Check for any leaking cylinder head core plugs. Are the cylinder head core plugs leaking? | -- | Go to Step 2 | Go to Step 13 |
13 | Check for a leaking cylinder head gasket(s), vent(s) or a cracked cylinder head(s). Is the cylinder head gasket leaking or is the cylinder head cracked? | -- | Go to Step 2 | Go to Step 14 |
14 | Check for a cracked throttle body or a gasket leak. Is the throttle body cracked or is there a gasket leak? | -- | Go to Step 2 | Go to Step 15 |
15 | Check for a cracked cylinder block. Is the cylinder block cracked? | -- | Go to Step 2 | Go to Step 16 |
16 | Check for any porous castings. Are the castings OK? | -- | System OK | -- |
