Engine General Information and Diagnosis: Bi-Fuel LPG model 1A-40
Engine noise – Valve
noise
NOTE
Before checking
mechanical noise, make
sure that:
• Specified spark plug is
used.
• Specified fuel is used.
Improper valve clearance
“Camshaft and Tappet Inspection”: in Section
Worn valve stem and guide
“Valve and Valve Guide Inspection”: in Section
Weak or broken valve spring
“Valve Spring Inspection”: in Section
Warped or bent valve
“Valve and Valve Guide Inspection”: in Section
Engine noise – Piston,
piston ring and cylinder
noise
NOTE
Before checking
mechanical noise, make
sure that:
• Specified spark plug is
used.
• Specified fuel is used.
Worn piston, piston ring and cylinder
bore
“Cylinder, Piston and Piston Ring Inspection”:
in Section
Engine noise –
Connecting rod noise
NOTE
Before checking
mechanical noise, make
sure that:
• Specified spark plug is
used.
• Specified fuel is used.
Worn piston, piston ring and cylinder
bore
“Cylinder, Piston and Piston Ring Inspection”:
in Section
Worn connecting rod bearing
“Crankshaft Pin and Connecting Rod Bearings
Inspection”: in Section 1D
Worn crank pin
“Crankshaft Pin and Connecting Rod Bearings
Inspection”: in Section 1D
Loose connecting rod bolts
“Piston, Piston Ring and Connecting Rod
Removal and Installation”: in Section
Low oil pressure
Condition “Low oil pressure”
Engine noise –
Crankshaft noise
NOTE
Before checking
mechanical noise, make
sure that:
• Specified spark plug is
used.
• Specified fuel is used.
Low oil pressure
Condition “Low oil pressure”
Worn main bearing
“Main Bearings Inspection”: in Section
Worn crankshaft journal
“Crankshaft Inspection”: in Section
Loose bearing cap bolts
“Main Bearings, Crankshaft and Cylinder Block
Removal and Installation”: in Section 1D
Excessive crankshaft thrust play
“Crankshaft Inspection”: in Section
Condition
Possible cause
Correction / Reference Item
Summary of Contents for Wagon R
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Page 32: ...0B 5 Maintenance and Lubrication ...
Page 184: ...1J 3 Charging System ...