NOTE: Appearance of oil will be brown and have a milky-like state. Oil may be above recommended level as well.
- Pressurize the cooling system. Does the system hold pressure?
- Yes, the system holds pressure; Go to step 7.
- No; the system leaks down; Go to step 2.
- Remove the oil pan. Pressurize the cooling system. Where is coolant leaking from?
- Between the piston and liner; Go to step 3.
- Between the liner and block; Go to step 4.
- From the gear train or an oil return passage; Go to step 5.
- No coolant leaks are found present; Go to step 7.
- Remove the cylinder head and inspect for a failed cylinder kit. Was a failed cylinder kit found?
- Yes; replace lower end bearing kit, make necessary repairs, flush cooling system, and change engine oil.
- No; Go to step 4.
- Remove the cylinder liner where the leak was found. Was damage found?
- Yes; replace lower end bearing kit, make necessary repairs, flush cooling system, and change engine oil.
- No; Go to step 7.
- Pressure test the Oil Cooler. Were leaks found?
- Yes, leaks are found. Replace lower end bearing kit, make necessary repairs, flush cooling system, and change engine oil.
- No, leaks are not found; Go to step 6.
- Remove the cylinder head and inspect the cylinder head gasket for torn or debonded grommets.
- If damage is found, replace lower end bearing kit, make necessary repairs, flush cooling system, and change engine oil.
- If no damage is found, Go to step 7.
- Is fault code SPN 100/FMI 1 Low Engine Oil Pressure present?
- Yes; Inspect the Main and Connecting Rod Bearings.
- No; troubleshooting complete.
Van coolant enter into crankcase on 2012 Freightliner Cascadia dd15 thru the oil cooler
yes