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 ENGINE
TROUBLESHOOTING
CAUSE
REMEDY
7. Inlet hose collapsing, especially during
7. Replace hoses.
8. Defective water pump
8. Rebuild or replace water pump.
9. Dirt or insects in radiator air passages
9. Remove foreign particles.
10. Exhaust system restricted
necessary. Make sure the heat control valve
is functioning.
Over Cooling
1. Thermostat sticking open
1. Clean, check, and, if necessary, replace
thermostat.
2. Low ambient temperature
2. Cover radiator sufficiently to bring water
temperature into operating range.
Excessive Exhaust Smoke
1. Too much oil in the crankcase (blue smoke)
1. Drain oil to "Full" mark on gauge.
2. Worn rings, pistons, cylinders or intake
2. Install new rings. Bore cylinders and
valves guides (blue smoke)
install oversize piston assemblies. Ream
valve guides and install valves with oversize
stems.
3. Too much fuel entering the combustion
3. Install new needle and seat and adjust
chamber (black smoke)
carburetor float level. Install new fuel pump
if pump pressure is too high.
4. Oil leaks at screws, gaskets and oil seals
4. Tighten screws. Replace gaskets and oil
seals as necessary.
5. Inferior grade of oil (blue smoke)
5. Drain crankcase and refill with good grade
of oil.
6. Over heating
6. Refer to "Overheating."
7. Ring gaps too great or not staggered
7. Install new rings, with gaps staggered.
(blue smoke)
8. Main or connecting rod bearings loose
8. Replace bearings as needed.
(blue smoke)
B-31
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