Toyota 5R 1969 Repair Manual page 29

3-2 E N G I N E - Trouble Shooting
i. B ra k es dragging
j. In correct valve clearance
k. Exhaust system partially
restricted
1. Incorrect g r a d e , and viscosity
oil being used
m . Fuel mixture too lean
n. Radiator fins clogged or
obstructed
E x c e s s iv e Oil Consumption
1. Oil leak
a. Oil pan drain plug loose
b . Oil pan attaching bolts loose
c. Oil pan gasket damaged
d. Timing g e a r c o v e r attaching
bolts loose or gasket damaged
e . Oil seal damaged
f. Cylinder head c o v e r gasket
damaged o r valve push rod
c o v e r gasket damaged
g . Fuel pump attaching bolts loose
o r gasket damaged
h . Oil filter attaching bolt loose
o r gasket damaged
E x c e s s iv e oil consumption
2 .
a. Defective piston rings
b . Ring gaps in line
c. Piston rings w o r n o r ring
g r o o v e s sticky
d . Carbon deposit in oil return
hole of oil ring
e . Piston o r cylinder w orn
e x c e s s iv e ly
f. V a lve stem " O " ring damaged
g . V a lve and guide bushing w o rn
H a rd Starting
1 . S lo w cranking
a. Im proper oil viscosity
b. D isch arged battery
c. Defective battery
d . P o o r battery connections
e . Defective starter motor
2. Defective ignition system
a. Burnt distributor points
Adjust brakes
Adjust valve clearance
Clean o r replace exhaust system
Replace with co rrect oil
Overhaul o r adjust carburetor
Clean radiator fins
Tighten drain plug
Tighten attaching bolts
R eplace gasket
Tighten attaching bolts o r replace
gasket
oil seal
Replace
Replace gasket
Tighten fuel pump attaching bolts c
replace gasket
Tighten attaching bolt o r replace
gasket
Replace piston rings
C o rre c t gap positions
piston rings
Replace
Replace rings
Replace pistons o r bore cylinders
" O " ring
Replace
valve and guide bushing
Replace
Change to p rop e r viscosity oil
Charge battery
R ep lace battery
Clean and tighten o r replace battery
connections
Overhaul and rep a ir o r replace
starter motor
Replace points