1987 SUZUKI GRAND VITARA check oil

ConditionPossible causeCorrection
Not enough powerEmission control
1. Malfunctioning EGR valve
Check and replace as
necessary.
Check and replace as
2. Malfunctioning bowl vent solenoid valve.necessary.
Check and replace as
3. Malfunctioning high altitude switch.necessary
Check nad replace as
4. Malfunctioning throttle position switch
(wide open switch)
necessary
Others
1. Dragging brakes
2. Slipping clutch
.Repair or replace
Adjust or replace
Engine hesitatesAbnormal condition in electrical systems
(Momentary lack of1. Defective spark plug or plug gap out ofReplace or adjust gap
response as the acceler-
ator
adjustment
is depressed. Can2. Cracked rotor or cap in distributor,Replace
occur at all car speeds.resulting in leakage
Usually most severe3. Deteriorated ignition coil, or crackReplace
when first trying toresulting in leakage
make the car move, as4. Leaky high-tension cordsReplace
from a stop sign.)5. Ignition timing out of adjustmentAdjust as prescribed
Abnormal condition in fuel system
1. Improper adjustment of float level
2. Clogged carburetor jets
3. Malfunctioning accelerator pump
Adjust
Clean
Check and replace as
necessary
4. Inadequately discharging fuel pumpReplace
Abnormal condition in engine
1. Loss of compression pressure due to leaky
cylinder head gasket
Replace
2. Compression pressure too low because ofReplace and rebore as
worn pistons, rings, cylinders or burnt valvesnecessary
Emission control
1. Malfunctioning bowl vent solenoid valveCheck and replace as
necessary
2. Malfunctioning throttle position switch
(wide open switch)
3. Malfunctionnig high altitude switch
4. Malfunctioning EGR valve
Check and replace as
necessary
Check and replace as
necessary
Check and replace as
necessary
5. Malfunctioning thermostatically controlled
air cleaner
Check and replace as
necessary
2-4

9
Cond it ionPossible causeCorrection
OverheatingAbnormal condition in ignition system
1. Improper ignition timingAdjust
2. Wrong heat value of spark plugsChange heat value
Abnormal condition in fuel systems
1. Float level set too lowAdjust
2. Clogged jets in carburetorClean
3. Loose inlet manifoldRetighten
Abnormal condition in cooling system,,
1. Not enough coolantRefill
2. Loose or broken fan beltAdjust or replace
3. Erratically working thermostatReplace
4. Poor water pump performanceReplace
5. Leaky radiator coresRepair or replace
Abnormal condition in lubrication system
1. Clogged oil filterReplace
2. Clogged oil strainerClean
3. Deteriorated oil pump performanceReplace
4. Oil leakage from oil pan or pumpRepair
5. Improper engine oil gradeReplace with proper grade
oil
6. Not enough oil in oil panReplenish
Others
1. Dragging brakesRepair or replace
2. Slipping clutchAdjust or replace
3. Blown cylinder head gasketReplace
Engine noiseCrankshaft noise
Note: Before check- 1. Worn-down bearings, resulting in excessivelyReplace
ing the mechanicallarge running clearances
noise, make sure that:2. Worn connecting-rod bearingsReplace
0 Ignition timing is3. Distorted connecting rodsRepair or replace
properly adjusted.4. Worn crankshaft journalsRepair by grinding, or re-
l Specified spark plugplace crankshaft
is used.5. Worn crankpins.Repair by grinding, or re-
l Specified fuel is used.place crankshaft
Noise due to pistons, rings, pins or cylinders
1. Abnormally worn cylinder boresRebore to next oversize
or replace
2. Worn pistons, rings or pinsReplace
3. Pistons tending to seizeReplace
4. Broken piston ringsReplace
, Others
1’. Excessively large camshaft thrust playReplace
2. Excessively large crankshaft thrust clearanceAdjust as prescribed
3. Valve clearance too largeAdjust as prescribed
4. Not enough engine oilReplenish
2-7

ConditionPossible causeCorrection
High fuel consumptionAbnormal condition ignition system
1. Improper ignition timingAdjust
2. Leak or loose connection of high tension cordRepair or replace
3. Defective spark plug (improper gap, heavyClean, adjust or replace
deposits, and burned electrodes, etc..)
4. Cracked distributor cap or rotorReplace
5. Malfunctioning mechanical and vacuumCheck and repair or
advancers in distributorreplace
Abnormal condition in fuel system
1. Improper float levelAdjust
2. Fuel leakage from tank, pipe or carburetorRepair or replace
3. Malfunctioning carburetor choke systemRepair or replace
4. Dirty or clogged carburetor jetsClean
5. Clogged air cleaner elementClean or replace
6. Malfunctioning thermostatically controlledCheck and repair or
air cleanerreplace
Abnormal condition in engine
1. Low compressionPreviously outlined
2. Poor valve seatingRepair or replace
3. Improper valve clearanceAdjust
Emission control
1. Air leaks at exhaust manifoldTighten manifold bolts
and nuts.
Replace gasket.
2. Oxygen sensor out of orderReplace.
3. Water temperature switch out of orderReplace.
4. Malfunctioning throttle position switchReplace
5. Malfunctioning MCS (mixture controlReplace
solenoid) valve in carburetor
6. Malfunctioning EGR valveReplace
Others
1. Dragging brakesRepair or replace
2. Slipping clutchAdjust or replace
3. Improper tire pressureAdjust
Excessive engine oilOil leakage
consumption1. Loose oil drain plugTighten
2. Loose oil pan securing boltsTighten
3. Deteriorated or broken oil pan sealantReplace sealant
4. Leaky oil sealsReplace
5. Blown cylinder head gasketReplace
6. Improper tightening of oil filterTighten
7. Loose oil pressure switchTighten
2-8

2-7. PROPELLER SHAFTS
IConditionIPossible causeICorrection
Vibration and noise1. Broken or worn bearings of universal joint
spider
2. Distorted propeller shaft
3. Unbalanced propeller shaft
4. Loose propeller shaft
Replace
Replace
Replace
Retighten
Noise occurring at
standing start or
during coasting
1. Worn or damaged universal joint
2. Worn propeller shaft splines, due to lack
of lubrication
3. Loose propeller shaft
4. Loose flanged yoke of universal joint
Replace
Replace
Retighten
Retighten
2-8. BRAKES
Condition
Not enough braking
force
Possible causeCorrection
1. Brake oil leakage from brake linesLocate leak point and repair
2. Brake disc or pads stained with oilClean or replace
3. Overheated brakesDetermine cause and repair
4. Poor contact of shoes on brakeRepair for proper contact
drum
5. Brake shoes linings stained with
oil or wet with water
Replace
6. Badly worn brake shoe liningsReplace
7. Defective wheel cylindersRepair or replace
8. Malfunctioning caliper assemblyRepair or replace
Brake Pull (Brakes not1. Shoe linings wet with water orReplace
working in unison)stained with oil in some brakes
2. Drum-to-shoe clearance out ofCheck for inoperative auto adjusting
adjustment in some brakes (Mal-mechanism
functioning auto adjusting
mechanism)
3. Drum out of round in some
brakes
Replace
4. Wheel tires inflated unequally
5. Malfunctioning wheel cylinders
6. Disturbed front end aiignment
7. Unmatched tires on same axle
8. Restricted brake tubes or hoses
9. Malfunctioning caliper assembly
10. Loose suspension parts
11. Loose calipers
Inflate equally
Repair or replace
Adjust as prescribed
Use tires with approximately the same
amount of tread on the same axle
Check for soft hoses and damaged
lines. Replace with new hoses and net
double-walled steel brake tubing.
Check for stuck or sluggish pistons an
proper lubrication of caliper slide bus
Caliper should slide.
Check all suspension mountings
Check and torque bolts to specifica-
tions
2-12

2-9. SUSPENSION, STEERING SYSTEM AND TIRES
Condition
Hard steering
Possible causeCorrection
1. Wheel tires not adequately inflatedAdjust the pressure
2. Bind in tie rod end ball studReplace
3. Linkage connections tending to seizeRepair or replace
4. Steering gearbox out of adjustmentAdjust as prescribed
5. Unevenly worn steering shaft bushReplace
6. Disturbed front wheel alignmentAdjust as prescribed
Wobbly steering wheel1. Wheel tires inflated unequallyAdjust tire pressure
(Shimmy, shake or2. Wobbly wheelsRepair or replace
vibration)3. Large difference in tire diameter betweenReplace._
right and left wheels
4. Loose hub nutsRetighten
5. Damaged or worn wheel bearingsReplace
6. Worn or loose tie rod endsReplace or retighten
7. Steering gearbox out of adjustmentAdjust as prescribed
8. Steering gearbox mounted looseRetighten
9. Worn steering knuckle oil sealReplace
10. Tire or wheel out of balanceBalance wheel or replace tire
and/or wheel
11. Blister or bump on tireReplace tire
12. Disturbed front wheel alignmentCheck front wheel alignment
Steering wheel
pulling to one
side (car pulls)
1. Unevenly worn wheel tires
2. Brake dragging in one road wheel
3. Wheel tires unequally inflated
4. Worn or distorted link rods
5. Disturbed front wheel alignment
6. Loose, bent or broken front or rear
suspension parts
Replace
Repair
Adjust tire pressure
Replace
Adjust as prescribed
Tighten or replace suspension
parts
Shocks coming to1. Tire inflating pressure too highReduce to the specification
steering wheel2. Poor shock absorber performanceReplace
(or wheel tramp)3. Differences in tire diameter among fourAdjust
road wheels
4. Worn steering linkage connectionsReplace
5. Worn or broken front wheel bearingsReplace
6. Loose front wheelRetighten
7. Steering wheel loose in placeRetighten the nut
8. Blister or bump on tireReplace tire
Rapid wear or uneven1. Wheel tires imporperly inflatedAdjust tire pressure
wear of wheel tires2. Differences in diameter among four tiresAdjust or replace
(Abnormal or excessive3. Worn or loose road wheel bearingsReplace
tire wear)4. Wobbly wheel tiresRepair or replace
2-14

Condition
Starter will not run
at all, or runs but
runs too slow to
crank with full
force
Starter does not
stop running.
2-11. ALTERNATOR
Condition
Battery quickly
becomes over-
discharged.
Charge light does not
light with ignition ON
and engine off
Alternator noise
Possible cause
Magnet switch trouble
1. Lead wire socket loose in place
2. Burnt contact plate, or poor contacting
action
3. Open-circuit in pull-in coil
4. Open-circuit in holding coil
Starter proper trouble
1. Brushes seating poorly or worn down
2. Burnt commutator
3. Open-circuit in armature winding
4. Worn-down starter.
1. Fused contact points of magnet-switch
contact plate
2. Short-circuit between turns of magnet-
switch coil (layer short-circuit)
3. Failure of returning action in ignition
switch
Possible cause
1. Loose or broken “V” belt
2. Battery cables loose, corroded or worn
3. Low level of battery electrolyte
4. Defective battery cell plates
5. Insufficient contact in battery terminal
connection.
6. Excessive electrical load
7. IC regulator or alternator faulty
8. Defective idle up system
1. Fuse blown
2. Light burned out
3. Loose wiring connection
4. IC regulator faulty
1. Worn, loose or otherwise defective bearings
Correction
Retighten
Replace, or repair
Replace
Replace
Repair or replace
Repair or replace
Replace
Replace
Repair or replace
Replace
Replace
Correction
Adjust or replace
Repair or replcae
Replace
Replace the battery
Clean and retighten
Check charging system
Replace
Repair or replace
Check fuse
Replace light
Tighten loose connection!
Replace
i
Replace
2-17

38) Remove oil seal housing.
Fig. 3-4-4 1
39) Remove crankshaft bearing caps, and take
out crankshaft.
Fig. 3-4-42
3-5. INSPECTION OF ENGINE
COMPONENTS
NOTE:
During and immediately after disassembly,
inspect cylinder block and head for evidence
of water leakage or damage and, after washing
them clean, inspect more closely.
Wash all disassembled parts clean, removing
grease,slime, carbon and scales, before
inspecting them to determine whether repair
is necessary or not. Be sure to de-scale water
jackets.
Use compressed air to clear internal oil holes
and passages.
Do not disturb set combinations of valves,
bearings and bearing caps, etc. Have the
sets segregated and identified.
Cylinder Head
l Remove all carbon from combustion cham-
bers.
NOTE:
Do not use any sharp-edged tool to scrape off
the carbon. Be careful not to scuff or nick
metal surfaces when decarboning. This applies
to valves and valve seats, too.
Fig. 3-5 1
l Check cylinder head for cracks in intake and
exhaust ports, combustion chambers, and
head surface.
3-17

l Check end face of each valve stem for wear.
This face meets rocker arm intermittently
‘in operation, and might become concaved or
otherwise irregular. As necessary, smoothen
the end face with an oil stone and, if this
grinding removes the end stock by as much as
0.5 mm (0.0196 in.) (as measured from the
original face), replace the valve.
Limit on stock allowance0.5 mm
of valve stem end face(0.0196 in.)
l Check each valve for radial runout with a
dial gauge and “V” block. To check runout,
rotate valve slowly. If runout exceeds limit,
replace valve.
I
Limit on valve head
radial runout0.08 mm (0.003 in.)I
Fig. 3-612
Valve Seats
CAUTION :
Valves to be checked and serviced for seat-
ing width and contact pattern must be those
found satisfactory in regard to stem clearan-
ce in the guide and also requirements stated
on preceding page under valves.
l Seating contact width:
Produce contact pattern on each valve in the
usual manner, namely, by giving uniform coat
of marking compound to valve seat and by
rotatingly tapping seat with valve head.
Valve lapper (tool used in valve lapping)
must be used.
The pattern produced on seating face of valve
must be a continuous ring without any break,
and width 6@ of pattern must be within
stated range as follows.
width revealed1.3- 1.5 mm
(0.0512 - 0.0590 in.)
Fig. 3-5-13
Fig. 3-5-14
@ Valve seat contact width
3-21