Suzuki Samurai 1986, Service Manual

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Condition
Possible cause
Correction
High fuel consumption Abnormal condition ignition system
1. Improper ignition timing
Adjust
2. Leak or loose connection of high tension cord
Repair or replace
3. Defective spark plug (improper gap, heavy
Clean, adjust or replace
deposits, and burned electrodes, etc..)
4. Cracked distributor cap or rotor
Replace
5. Malfunctioning mechanical and vacuum
Check and repair or
advancers in distributor
replace
Abnormal condition in fuel system
1. Improper float level
Adjust
2. Fuel leakage from tank, pipe or carburetor
Repair or replace
3. Malfunctioning carburetor choke system
Repair or replace
4. Dirty or clogged carburetor jets
Clean
5. Clogged air cleaner element
Clean or replace
6. Malfunctioning thermostatically controlled
Check and repair or
air cleaner
replace
Abnormal condition in engine
Low compression
Previously outlined
2. Poor valve seating
Repair or replace
3. Improper valve clearance
Adjust
Emission control
1. Air leaks at exhaust manifold
Tighten manifold bolts
and nuts.
Replace gasket.
2. Oxygen sensor out of order
Replace.
3. Water temperature switch out of order
Replace.
4. Malfunctioning throttle position switch
Replace
5. Malfunctioning MCS (mixture control
Replace
solenoid) valve in carburetor
6. Malfunctioning EGR valve
Replace
Others
1. Dragging brakes
Repair or replace
2. Slipping clutch
Adjust or replace
3. Improper tire pressure
Adjust
Excessive engine oil Oil leakage
consumption
1. Loose oil drain plug
Tighten
2. Loose oil pan securing bolts
Tighten
3. Deteriorated or broken oil pan sealant
Replace sealant
4. Leaky oil seals
Replace
5. Blown cylinder head gasket
Replace
6. Improper tightening of oil filter
Tighten
7. Loose oil pressure switch
Tighten
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