Subaru Legacy (2005 year). Service manual — part 76
ME(H4SO 2.0)-87
MECHANICAL
Connecting Rod
24.Connecting Rod
A: SPECIFICATION
Refer to “Cylinder Block” for removal and installa-
tion procedures of connecting rod.
<Ref. to ME(H4SO 2.0)-64, REMOVAL, Cylinder
Block.> <Ref. to ME(H4SO 2.0)-69, INSTALLA-
TION, Cylinder Block.>
ME(H4SO 2.0)-88
MECHANICAL
Crankshaft
25.Crankshaft
A: SPECIFICATION
Refer to “Cylinder Block” for removal and installa-
tion procedures of crankshaft. <Ref. to ME(H4SO
2.0)-64, REMOVAL, Cylinder Block.> <Ref. to
ME(H4SO 2.0)-69, INSTALLATION, Cylinder
Block.>
ME(H4SO 2.0)-89
MECHANICAL
Engine Trouble in General
26.Engine Trouble in General
A: INSPECTION
NOTE:
“RANK” shown in the chart refers to the possibility of the cause of trouble in order (“Very often” to “Rarely”)
A — Very often
B — Sometimes
C — Rarely
Symptom
Problem parts, etc.
Possible cause
Rank
1. Engine does not start.
1) Starter does not turn.
Starter
Defective battery-to-starter harness
B
Defective starter switch
C
Defective inhibitor switch
C
Defective starter
B
Battery
Poor terminal connection
A
Run-down battery
A
Defective charging system
B
Friction
Seizure of crankshaft and connecting rod bearing
C
Seized camshaft
C
Seized or stuck piston and cylinder
C
2) Initial combustion does
not occur.
Starter
Defective starter
C
Engine control system <Ref. to EN(H4SO 2.0)(diag)-2, Basic Diagnostic Procedure.>
<Ref. to EN(H4SO 2.5)(diag)-2, Basic Diagnostic Procedure.>
A
Fuel line
Defective fuel pump and relay
A
Lack of or insufficient fuel
B
Belt
Trouble
B
Defective timing
B
Compression
Incorrect valve clearance
C
Loosened spark plug or defective gasket
C
Loosened cylinder head bolt or defective gasket
C
Improper valve sealing
C
Defective valve stem
C
Worn or broken valve spring
B
Worn or stuck piston rings, cylinder and piston
C
Incorrect valve timing
B
Improper engine oil (low viscosity)
B
ME(H4SO 2.0)-90
MECHANICAL
Engine Trouble in General
3) Initial combustion occurs.
Engine control system <Ref. to EN(H4SO 2.0)(diag)-2, Basic Diagnostic Procedure.>
<Ref. to EN(H4SO 2.5)(diag)-2, Basic Diagnostic Procedure.>
A
Intake system
Defective intake manifold gasket
B
Defective throttle body gasket
B
Fuel line
Defective fuel pump and relay
C
Clogged fuel line
C
Lack of or insufficient fuel
B
Belt
Trouble
B
Defective timing
B
Compression
Incorrect valve clearance
C
Loosened spark plug or defective gasket
C
Loosened cylinder head bolt or defective gasket
C
Improper valve sealing
C
Defective valve stem
C
Worn or broken valve spring
B
Worn or stuck piston rings, cylinder and piston
C
Incorrect valve timing
B
Improper engine oil (low viscosity)
B
4) Engine stalls after initial
combustion.
Engine control system <Ref. to EN(H4SO 2.0)(diag)-2, Basic Diagnostic Procedure.>
<Ref. to EN(H4SO 2.5)(diag)-2, Basic Diagnostic Procedure.>
A
Intake system
Loosened or cracked intake duct
B
Loosened or cracked PCV hose
C
Loosened or cracked vacuum hose
C
Defective intake manifold gasket
B
Defective throttle body gasket
B
Dirty air cleaner element
C
Fuel line
Clogged fuel line
C
Lack of or insufficient fuel
B
Belt
Trouble
B
Defective timing
B
Compression
Incorrect valve clearance
C
Loosened spark plug or defective gasket
C
Loosened cylinder head bolt or defective gasket
C
Improper valve sealing
C
Defective valve stem
C
Worn or broken valve spring
B
Worn or stuck piston rings, cylinder and piston
C
Incorrect valve timing
B
Improper engine oil (low viscosity)
B
Symptom
Problem parts, etc.
Possible cause
Rank
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