Fuel Timing

25. ENGINE HAS LOW OIL PRESSURE

Cause: Correction:

Dirty Oil Filters or Oil Cooler Check the operation of bypass valve for the filter. Install new oil filters if needed. Clean or install new oil cooler core. Remove dirty oil from engine. Put clean oil in engine.

Diesel Fuel in Lubrication Oil Find the place where diesel fuel gets into the lubrication oil. Make repairs as needed. Remove the lubrication oil that has diesel fuel in it. Install new oil filters. Put clean oil in the engine.

Too Much Clearance Between Rocker Arm Shaft Check lubrication in valve compartments. Install and Rocker Arms new parts as necessary.

Oil Pump Suction Pipe Has A Defect Replacement of pipe is needed.

Oil Pressure Relief Does Not Close Clean valve and housing. Install new parts as necessary.

Oil Pump Has A Defect Repair or replace oil pump.

Too Much Clearance Between Crankshaft and Inspect the bearings and make replacement as Crankshaft Bearings necessary.

Too Much Clearance Between Camshaft and Cam- Install new camshaft and camshaft bearings if shaft Bearings necessary.

Defect in Oil Pressure Gauge Install new gauge.

26. ENGINE USES TOO MUCH LUBRICATION OIL

Cause: Correction:

Too Much Lubrication Oil In Engine Remove extra oil. Find where extra oil comes from. Put correct amount of oil in engine. Do not put too much oil in engine.

Oil Leaks Find all oil leaks. Make repairs as needed. Check for dirty crankcase breather.

Oil Temperature is Too High Check operation of oil cooler. Install new parts if necessary. Clean the core of the oil cooler.

Too Much Oil in the Valve Compartment Be sure that the dowel is installed in the left bolt hole of the rocker shaft. The dowel is located between the rocker shaft and valve cover base.

Worn Valve Guides Reconditioning of the cylinder head is needed.

Worn Piston Rings Inspect and install new parts as needed.

Failure of Seal Rings in Turbocharger Check inlet manifold for oil and make repairs to the turbocharger if necessary.