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ENGINE DIAGNOSIS TSB Revision ENGINE MECHANICAL <3.8L ENGINE> 11C-3 ENGINE DIAGNOSIS M1111000700273 SYMPTOMS PROBABLE CAUSE REMEDY Compression is too Blown cylinder head gasket Replace the gasket. Worn or damaged piston rings Replace the rings. Worn piston or cylinder Repair or replace the piston and/or the Worn or damaged valve seat Repair or replace the valve and/or the Drop in engine oil Engine oil level is too low Check the engine oil level. Malfunction of engine oil pressure switch Replace the engine oil pressure switch. Install a new filter. Worn oil pump gears or cover Replace the gears and/or the cover. Thin or diluted engine oil Change the engine oil to the correct Stuck (opened) oil relief valve Repair the relief valve. Excessive bearing clearance Replace the bearings. Engine oil pressure Stuck (closed) oil relief valve Repair the relief valve. Noisy valves Malfunction of lash adjuster (including Check the lash adjuster. Thin or diluted engine oil (low engine oil Change the engine oil. Worn or damaged valve stem or valve Replace the valve and/or the guide. Connecting rod Insufficient oil supply Check the engine oil level. Thin or diluted engine oil Change the engine oil. Excessive bearing clearance Replace the bearings. |