Step | Action | Value | Yes | No | ||||
|---|---|---|---|---|---|---|---|---|
1 | Check for a leaking radiator. Refer to Cooling System Leak Testing . Is the radiator leaking? | -- | ||||||
2 | Repair or install new parts as necessary. Is the repair complete? | -- | System OK | -- | ||||
3 | Check for a leaking heater core. Refer to Section 1A. Is the repair complete? | -- | System OK | |||||
4 | Check for a faulty surge tank pressure cap. Refer to Radiator Filler Cap Assembly . Is the cap operating properly? | -- | ||||||
5 | Check for a leaking coolant recovery hose or a cracked recovery reservoir. Refer to Coolant Recovery Reservoir Replacement . Is the reservoir or the hose leaking? | -- | ||||||
6 | Check for any loose or damaged hoses and connections. Refer to Cooling System Maintenance Recommendations . Are any hoses damaged or are any hose connections leaking? | -- | ||||||
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 ? | -- | ||||||
8 | Check for a cracked water pump or a leaking water pump gasket. Is the water pump cracked or is there a leaking gasket? | -- | ||||||
9 | Check for a leaking water pump driveshaft seal. Is the water pump shaft seal leaking? | -- | ||||||
10 | First, add cooling system sealer pellets. If a leak still occurs, replace the water pump. Refer to Water Pump Replacement . Is the repair complete? | -- | System OK | |||||
11 | Check for a leaking engine block coolant drain hole plug or knock sensor. Are any drain hole plugs or knock sensors leaking? | -- | ||||||
12 | Check for any leaking cylinder head core plugs. Are the cylinder head core plugs leaking? | -- | ||||||
13 | Check for a leaking cylinder head gasket(s) or a cracked cylinder head(s).
Is the cylinder head gasket leaking or is the cylinder head cracked? | -- | ||||||
14 | Check for a cracked plenum or any gasket leaks. Is there a plenum or gasket(s) leak? | -- | ||||||
15 | Check for a cracked throttle body or a gasket leak. Is the throttle body cracked or is there a gasket leak? | -- | ||||||
16 | Check for a cracked cylinder block. Refer to Engine Replacement in Engine Mechanical. Is the cylinder block cracked? | -- | ||||||
17 | Check for any porous castings. Are the castings OK? | -- | System OK | -- |
