Inspection
| Action
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DEFINITION: Excessive white smoke and/or coolant type odor coming from the exhaust
pipe may indicate coolant in the combustion chamber. Low coolant levels, an inoperative
cooling fan, or a faulty thermostat may lead to an "overtemperature" condition which
may cause engine component damage.
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Preliminary Inspection
| Verify that there are no external coolant leaks. Refer to
Loss of Coolant
in Engine Cooling.
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Injector Tube Leakage
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• | Replace component as necessary. |
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Isolate Affected Cylinders
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• | Cylinder balance test with scan tool |
• | Cooling system pressurization |
• | Inspection of glow plugs |
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EGR System Inspection (If equipped)
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• | Inspect EGR valve and intake system for evidence of coolant leakage. |
• | Replace the EGR cooler if any problem is found. |
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Cylinder Head Gasket Leakage
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• | Remove cylinder heads of the affected cylinder bank and inspect for damage. |
• | Replace components as necessary. |
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Cylinder Head or Engine Block Damage
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• | Inspect the cylinder heads for cracks and warpage. |
• | Inspect the cylinder block for damage. |
• | Inspect the cylinder block to head mating surface for staightness. |
• | Replace components as necessary. |
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