Camshaft Timing

11. LOUD COMBUSTION NOISE (SOUND)

Cause: Correction:

Bad Quality Fuel Remove the fuel from the fuel tank. Install new fuel filters. Put a good grade of clean fuel in the fuel tank.

Wrong Fuel Injection Timing Make adjustment to timing. See Subject, FUEL TIMING.

Defect in Fuel Injector(s) Make Reference to Item 7.

12. VALVE TRAIN NOISE (CLICKING)

Cause: Correction:

Damage to Valve Spring(s), Locks, or Broken or Install new parts where necessary. Broken locks can Worn Valve Lifter cause the valve to get into the cylinder. This will cause much damage.

Not Enough Lubrication Check lubrication in valve compartment. There must be a strong flow of oil at engine high rpm, but only a small flow of oil at low rpm. Oil passages must be clean, especially those that send oil to the cylinder head.

Too Much Valve Clearance Make adjustment according to the Subject, VALVE CLEARANCE.

Damage to Valve(s) Make a replacement of the valve(s) and make an adjustment as necessary.

13. OIL IN COOLING SYSTEM

Cause: Correction:

Defect In Core of Engine Oil Cooler Install a new engine oil cooler.

Failure of Cylinder Head Gasket or Water Seals Check cylinder liner projection. Install a new cylinder head gasket and new water seals in the spacer plate. Tighten the bolts that hold the cylinder head according to the Specifications.

14. MECHANICAL NOISE (KNOCK) IN ENGINE

Cause: Correction:

Failure of Bearing For Connecting Rod Inspect the bearings for the connecting rods and the bearing surfaces (journals) on the crankshaft. Install new parts where necessary.

Damaged Gears Install new parts where necessary.

Damaged Crankshaft Make replacement of the crankshaft.

Defect in Attachment Repair or install new components.

100

15. FUEL CONSUMPTION TOO HIGH

Cause: Correction:

Fuel System Leaks Tighten or make replacement of parts at points of leakage. Fuel and Combustion Noise (Knock) Make Reference to Item 7 and Item 9. Wrong Fuel Injection Timing Make adjustment to timing. Defect in Fuel Injector(s) Make Reference to Item 7.

16. LOUD VALVE TRAIN NOISE

Cause: Correction:

Damage to Valve Spring(s) Make replacement of parts with damage. Damage to Camshaft Make replacement of parts with damage. Clean engine thoroughly. If replacement of camshaft is made, new valve lifters are also necessary. Damage to Valve Lifter Clean engine thoroughly. Make a replacement of the damaged valve lifters. Inspect camshaft lobes for damage. Look for valves that do not move freely. Make an adjustment to valve clearance according to the Subject, VALVE CLEARANCE.

17. TOO MUCH VALVE LASH

Cause: Correction:

Not Enough Lubrication Check lubrication in valve compartment. There must be a strong flow of oil at engine high rpm, but only a small flow at low rpm. Oil passages must be clean, especially those sending oil to the cylinder head.

Rocker Arm Worn at Face That Makes Contact If there is too much wear, install new parts or rocker With Bridge arms. Make adjustment of valve clearance according to Subject, VALVE CLEARANCE.

Bridges for Valves Worn Make an adjustment or replacement as necessary.

End of Valve Stem Worn If there is too much wear, install new valves. Make adjustment to valve clearance according to Subject, VALVE CLEARANCE.

Worn Push Rods If there is too much wear, install new push rods. Make adjustment of valve clearance according to Subject, VALVE CLEARANCE.

Broken or Worn Valve Lifters Install new valve lifters. Check camshaft for wear. Check for free movement of valves or bent valve stem. Clean engine thoroughly. Make adjustment of valve clearance according to Subject, VALVE CLEARANCE

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