Step | Action | Value | Yes | No |
|---|---|---|---|---|
1 | Check for an incorrect or faulty surge tank cap. Is the surge tank cap incorrect or faulty? | -- | ||
2 | Replace the surge tank cap. Refer to Cooling System . Is there still a coolant loss? | 103 kPa (15 psi) | System OK | |
3 |
Are any hoses loose or damaged? | -- | ||
4 |
Is there still a coolant loss? | -- | System OK | |
5 | Check the surge tank and tank hose for any leaks. Is the surge tank hose or tank leaking? | -- | ||
6 | Replace the surge tank hose or the surge tank. Refer to Radiator Surge Tank . Is there still a coolant loss? | -- | System OK | |
7 | Check the cylinder head bolts for the proper torque. Are the bolts tightened to the proper specification? | -- | ||
8 | Check for a seal leak at the coolantpump. Is there a seal leak at the water pump? | -- | ||
9 | Tighten the cylinder head bolts to the proper specification. Refer to Fastener Tightening Specifications in Engine Mechanical. Is there still a coolant leak? | -- | System OK | |
10 | Replace the coolant pump. Refer to Water Pump Replacement . Is there still a coolant loss? | -- | System OK | |
11 | Check for a coolant pump gasket leak. Is the coolant pump gasket leaking? | -- | ||
12 | Replace the coolant pump gasket. Refer to Water Pump Replacement . Is there still a coolant loss? | -- | System OK | |
13 | Check for a leak at the cylinder head gasket. Is there coolant leakage at the cylinder head gasket? | -- | ||
14 | Replace the cylinder head gasket. Refer to Cylinder Head Replacement in Engine Mechanical. Is there still a coolant loss? | -- | System OK | |
15 | Check for coolant leakage at the radiator. Pressure test the cooling system, Refer to Cooling System Leak Testing . Is there coolant leakage at the radiator? | -- | ||
16 | Replace the radiator. Refer to Radiator Replacement . Is there still a coolant loss? | -- | System OK | |
17 | Check the heater core for leakage. Is the heater core leaking? | -- | ||
18 | Replace the heater core. Refer to HVAC. Is there still a loss of coolant? | -- | System OK | |
19 | Check for cracked cylinder head or block. Perform a cylinder leak test. Refer to Cylinder Head Inspection and Measurement in Engine Mechanical. Is the cylinder head or block cracked? | -- | System OK | |
20 | Resurface the cylinder head or block. Refer to Cylinder Head Inspection and Measurement in Engine Mechanical. If necessary, replace the cylinder head or block. Is there still a coolant loss? | -- | -- | System OK |
