TM 5-3805-261-34ENGINE TROUBLESHOOTING AND MAINTENANCE PROCEDURES.MALFUNCTIONTEST OR INSPECTIONCORRECTIVE ACTIONr.TOO MUCH BLACK OR GRAY SMOKE.Step 3.Check the turbocharger.If you suspect a problem with the turbocharger--contact General Support.s.TOO MUCH WHITE OR BLUE SMOKE.Step 1.Check the fuel injection timing.If the fuel injection timing is not correct--adjust. Refer to paragraph 3-7.Step 2.Check the valve guides.If the valve guides are worn--the cylinder head should be reconditioned. Contact General Support.Step 3.Check the piston rings.If the piston rings are worn--contact General Support.Step 4.Check the turbocharger oil seal.If the oil seal is damaged or defective, or if you suspect a problem with the turbocharger--contact General Support.t.ENGINE OIL PRESSURE IS LOW.Step 1.Check the lubrication in the valve compartment.If the oil level is not correct--service. Refer to paragraph 3-12.Step 2.Check the oil pump suction pipe.If the oil pump suction pipe is damaged or defective--replace. Refer to paragraph 3-16.Step 3.Check the oil pump relief valve.If the relief valve is not operating correctly--replace. Refer to paragraph 3-16.3-13
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