3-80
Problem: Engine lacks power
Condition
Remedy
1.
Valve clearance
incorrect
2.
Valve springs
weak
3.
Valve timing
incorrect
4.
Piston ring(s) - cylinder
worn
5.
Valve seating
poor
6.
Rocker arms - shafts
worn
7.
Air cleaner element
obstructed
8.
Oil (in the engine)
overfilled - contaminated
9.
Injector timing
incorrect
10.
Fuel filter
restricted
1. Adjust clearance
2. Replace springs
3. Re-time valve gear
4. Replace - service rings - cylinder
5. Repair seats
6. Replace arms - shafts
7. Clean element
8. Drain excess oil - change oil
9. Time injectors
10. Replace fuel filter
Problem: Engine overheats
Condition
Remedy
1.
Air filter
restricted
2.
Oil
low
3.
Fuel
incorrect
4.
Oil pump
defective
5.
Oil circuit
obstructed
6.
Coolant level
low
7.
Fan
malfunctioning
8.
Fan switch
malfunctioning
9.
Thermostat
stuck - closed
10.
Radiator hoses - cap
damaged - obstructed
1. Clean - replace air filter
2. Add oil
3. Drain - replace fuel
4. Replace pump
5. Clean circuit
6. Fill - examine system for leaks
7. Check fan fuse - replace fan
8. Replace fan switch
9. Replace thermostat
10. Clear obstruction - replace hoses
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