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DI05-18 CHANGED BY EFFECTIVE DATE AFFECTED VIN LUBRICATION SYSTEM DI ENG SM - 2004.4 TROUBLE DIAGNOSIS • Loosened oil drain plug • Loosen oil pan bolts • Poor sealing at oil pan gasket • Loosened oil filter • Loosened oil pressure switch • Poor sealing at camshaft front oil seal • Poor sealing at crankshaft front oil seal • Poor sealing at crankshaft rear oil seal • Poor sealing at cylinder head cover gasket • Damaged cylinder head cover gasket Oil intrusion into combustion chamber • Stuck piston ring • Worn piston or cylinder • Worn piston ring or ring groove • Improper position of ring cut-outs • Worn or damaged valve mechanism • Oil leaks • Defective turbo charger Defective lubrication system • Improper viscosity • Loosened oil pressure switch • Low engine oil level • Poor oil pump • Worn or damaged oil pump relief valve • Clogged oil filter or oil strainer • Oil leaks • Retighten • Retighten • Replace • Retighten • Retighten • Replace • Replace • Replace • Replace • Replace • Remove carbon or replace ring • Boring or replace • Replace piston and piston ring • Adjust • Replace • Repair • Check • Replace with specified oil • Retighten • Add • Replace • Replace • Replace or clean • Repair Symptom Action Excessive oil consumption Cause Low engine oil pressure |