Suzuki F6A Service Manual page 42

Condition
High fuel consump-
tion
Excessive engine oil
consumption
Condition
Excessive engine oil
consumption
40
Possible cause
Abnormal condition ignition system
1. Leak or loose connection of high tension cord
2. Defective spark plug (improper gap, heavy deposits,
burned electrodes, etc...)
Abnormal condition in fuel system
1. Clogged air cleaner element
Abnormal condition in engine
1. Low compression
2. Poor valve seating
3. Improper valve seating
Others
1. Dragging breaks
2. Slipping clutch
3. Improper tire pressure
Oil leakage
1. Loose oil drain plug
2. Loose oil pan securing bolts
3. Deteriorated or broken oil pan sealant
4. Leaky oil seals
5. Blown cylinder head gasket
6. Improper tightening of oil filter
7. Loose oil pressure switch
Possible cause
" Oil pumping " ( Oil finding its way into combus-
tion chambers.)
1. Sticky piston ring
2. Worn piston ring groove and ring
3. Improper location of piston ring gap
4. Worn piston or cylinders
Oil leakage along valve stems
1. Defective valve stem oil seals
2. Badly worn valves or valve guide bushes
Correction
Repair or replace
Check and repair or replace
Clean or replace
Previously outlined
Repair or replace
Adjust
Repair or replace
Adjust or replace
Adjust
Tighten
Tighten
Replace sealant
Replace
Replace
Tighten
Tighten
Correction
Remove carbon and
replace rings
Replace piston and ring
Reposition ring gap
Replace pistons and rebore
as necessary
Replace
Replace