Step | Action | Value | Yes | No |
|---|---|---|---|---|
1 | Check for an incorrect or damaged radiator filler cap. Was the incorrect radiator cap installed or is the radiator cap damaged? | 103 kPa (15 psi) | Go to Step 2 | Go to Step 3 |
2 | Do a cap pressure test. Refer to Pressure Cap Testing . If necessary, replace the cap. Is there still a loss of coolant? | -- | Go to Step 3 | System OK |
3 | Check for a leaking coolant recovery reservoir or for a loose or damaged reservoir hose. Is there a leak in the reservoir or is the reservoir hose damaged? | -- | Go to Step 4 | Go to Step 5 |
4 | Replace the coolant recovery reservoir. Refer to Coolant Recovery Reservoir Replacement . Is there still a loss of coolant? | -- | Go to Step 5 | System OK |
5 | Check for any loose or damaged radiator hoses and connections. Are any radiator hoses or hose connections damaged? | -- | Go to Step 6 | Go to Step 7 |
6 | Reseat the hoses and clamps. If necessary, replace the hoses and the clamps. Refer to Radiator Inlet Hose Replacement and/or Radiator Outlet Hose Replacement . Is there still a loss of coolant? | -- | Go to Step 7 | System OK |
7 | Check for a water pump gasket leak. Is there a leak at the water pump gasket? | -- | Go to Step 8 | Go to Step 9 |
8 | Replace the water pump gasket.
Is there still a loss of coolant? | -- | Go to Step 9 | System OK |
9 | Check for a water pump seal leak. Is there a leak at the water pump seal? | -- | Go to Step 10 | Go to Step 11 |
10 | Replace the water pump.
Is there still a loss of coolant? | -- | Go to Step 11 | System OK |
11 | Check if the cylinder head bolts are tightened to specification. Refer to Fastener Tightening Specifications in Engine Mechanical. Are the cylinder head bolts tightened to specifications? | -- | Go to Step 13 | Go to Step 12 |
12 | Tighten the cylinder head bolts to specifications. Refer to Fastener Tightening Specifications in Engine Mechanical. If necessary, replace the cylinder head gasket. Refer to Cylinder Head Removal in Engine Mechanical. Is there still a loss of coolant? | -- | Go to Step 13 | System OK |
13 | Inspect the radiator and check for any coolant leaks. Is the radiator leaking coolant? | -- | Go to Step 14 | Go to Step 15 |
14 | Replace the radiator. Refer to Radiator Replacement . Is there still a loss of coolant? | -- | Go to Step 15 | System OK |
15 | Check the following for leaks:
Are any coolant leaks occurring at these locations? | -- | Go to Step 16 | System OK |
16 | Make the necessary repairs or replace the components as necessary in order to repair the leak. Is there still a loss of coolant? | -- | -- | System OK |
