Suzuki Samurai 1986, Service Manual

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Cond it ion
Possible cause Correction
Overheating Abnormal condition in ignition system
1. Improper ignition timing
Adjust
2. Wrong heat value of spark plugs Change heat value
Abnormal condition in fuel systems
1. Float level set too low
Adjust
2. Clogged jets in carburetor Clean
3. Loose inlet manifold Retighten
Abnormal condition in cooling system
1. Not enough coolant Refill
2. Loose or broken fan belt
Adjust or replace
3. Erratically working thermostat Replace
4. Poor water pump performance
Replace
5. Leaky radiator cores
Repair or replace
Abnormal condition in lubrication system
1. Clogged oil filter
Replace
2. Clogged oil strainer Clean
3. Deteriorated oil pump performance Replace
4. Oil leakage from oil pan or pump Repair
5. Improper engine oil grade Replace with proper grade
oil
6. Not enough oil in oil pan Replenish
Others
1. Dragging brakes
Repair or replace
2. Slipping clutch Adjust or replace
3. Blown cylinder head gasket Replace
Engine noise Crankshaft noise
Note: Before check-
1. Worn-down bearings, resulting in excessively
Replace
ing the mechanical
large running clearances
noise, make sure that:
2. Worn connecting-rod bearings
Replace
Ignition timing is
3. Distorted connecting rods
Repair or replace
properly adjusted.
4. Worn crankshaft journals
Repair by grinding, or
l
Specified spark plug
place crankshaft
is
used.
5. Worn crankpins.
Repair by grinding, or
l
Specified fuel is used.
place crankshaft
Noise due to pistons, rings, pins or cylinders
1. Abnormally worn cylinder bores Rebore to next oversize
or replace
2. Worn pistons, rings or pins Replace
3. Pistons tending to seize
Replace
4. Broken piston rings
Replace
, Others
Excessively large camshaft thrust play
Replace
2. Excessively large crankshaft thrust clearance Adjust as prescribed
3. Valve clearance too large Adjust as prescribed
4. Not enough engine oil
Replenish
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