END BIT (L.H.) (Hot Cupped) 3G8318 - Caterpillar

Probable Causes
Oil leaks
Oil level
Engine oil cooler
Turbocharger seal
Internal engine wearRecommended Actions
Oil Leaks
Check the engine compartment for oil leaks. Repair any oil leaks that are identified.Oil Level
Check the engine oil level. Too much oil in the engine crankcase can cause the engine to consume oil. Remove excessive engine oil from the crankcase.Ensure that the dipstick is properly calibrated and/or that the dipstick is correct for the application. Calibrate the dipstick and/or replace the dipstick.Engine Oil Cooler
Check for leaks in the engine oil cooler. Check for oil in the engine coolant. If necessary, repair the engine oil cooler.Turbocharger Seal
Check for turbocharger shaft seal leakage. Remove the air inlet piping and the exhaust outlet piping from the turbocharger. Check the compressor wheel and the turbine for evidence of an oil leak. If necessary, repair the turbocharger or replace the turbocharger.Internal Engine Wear
Internal engine wear or damage can cause excessive oil leakage into the combustion area of the cylinders. Inspect the following components for excessive wear or damage:
Faulty piston
Worn piston rings
Worn cylinder liners
Worn valve guides
Damaged cylinder head
Damaged injector tip
Oil leakage at the injectorBuildup of lacquer due to the wrong oil quality will leave white deposits on the underside of the valves and on the piston crown.