Subaru Legacy (2005 year). Service manual - part 402

ME(H6DO)-83

MECHANICAL

Piston

26.Piston 

A: SPECIFICATION

Refer to “Cylinder Block” for removal and installa-
tion procedures of pistons. <Ref. to ME(H6DO)-65,
REMOVAL, Cylinder Block.> <Ref. to ME(H6DO)-
67, INSTALLATION, Cylinder Block.>

ME(H6DO)-84

MECHANICAL

Connecting Rod

27.Connecting Rod

A: SPECIFICATION

Refer to “Cylinder Block” for removal and installa-
tion procedures of connecting rod.
<Ref. to ME(H6DO)-65, REMOVAL, Cylinder
Block.> <Ref. to ME(H6DO)-67, INSTALLATION,
Cylinder Block.>

ME(H6DO)-85

MECHANICAL

Crankshaft

28.Crankshaft 

A: SPECIFICATION

Refer to “Cylinder Block” for removal and installa-
tion procedures of crankshaft. <Ref. to ME(H6DO)-
65, REMOVAL, Cylinder Block.> <Ref. to
ME(H6DO)-67, INSTALLATION, Cylinder Block.>

ME(H6DO)-86

MECHANICAL

Engine Trouble in General

29.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 or neutral position 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(H6DO)(diag)-2, Basic Diagnostic Procedure.>

A

Fuel line

Defective fuel pump and relay

A

Lack of or insufficient fuel

B

Chain

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

Trouble of tappet

C

Trouble of tappet. In case noise occurs with valve mov-
ing. Or the harness involved to oil switching solenoid 
valve, variable valve lift diagnosis oil pressure switch 
and variable valve lift has trouble in a past.

B