Suzuki WagonR+ RB310 Service Manual page 1785

6-1-22 GENERAL INFORMATION AND ENGINE DIAGNOSIS
Condition
Low oil pressure
Engine noise
Note: Before
checking mechanical
noise, make sure
that:
D Specified spark
plug is used.
D Specified fuel is
used.
Possible Cause
D Improper oil viscosity
D Malfunctioning oil pressure switch
D Clogged oil strainer
D Functional deterioration of oil pump
D Worn oil pump relief valve
D Excessive clearance in various sliding parts
Valve noise
D Improper valve lash
D Worn valve stem and guide
D Weak or broken valve spring
D Warped or bent valve
Piston, ring and cylinder noise
D Worn piston, ring and cylinder bore
Connecting rod noise
D Worn rod bearing
D Worn crank pin
D Loose connecting rod nuts
D Low oil pressure
Crankshaft noise
D Low oil pressure
D Worn bearing
D Worn crankshaft journal
D Loose bearing cap bolts
D Excessive crankshaft thrust play
Referring Item
Engine oil and oil filter change in
Section 0B
Oil pressure switch inspection in
Section 8
Oil pan and oil pump strainer
cleaning in Section 6A
Oil pump in Section 6A
Oil pump in Section 6A
Valve lash in Section 6A
Valves inspection in Section 6A
Valve springs inspection in
Section 6A
Valves inspection in Section 6A
Pistons and cylinders inspection
in Section 6A
Crank pin and connecting rod
bearing inspection in Section 6A
Crank pin and connecting rod
bearing inspection in Section 6A
Connecting rod installation in
Section 6A
Previously outlined
Previously outlined
Crankshaft and bearing
inspection in Section 6A
Crankshaft and bearing
inspection in Section 6A
Crankshaft inspection in
Section 6A
Crankshaft thrust play inspection
in Section 6A