Fuel Line - Subaru LEGACY 2006 Manual

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27.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
Symptoms
1. Engine does not start.
1) Starter does not turn.
2) Initial combustion does
not occur.
3) Initial combustion occurs.
Engine Trouble in General
Problem parts etc.
Starter Defective battery-to-starter harness
Defective starter switch
Defective inhibitor switch
Defective starter
Battery Improper connection of the terminal
Run-down battery
Defective charging system
Friction Seizure of crankshaft and connecting rod bearing
Seized camshaft
Seized or stuck piston and cylinder
Starter Defective starter
Engine control system <Ref. to EN(H4SO)(diag)-2, Basic Diagnostic Procedure.>

Fuel line

Defective fuel pump and relay
Lack of or insufficient fuel
Belt Trouble
Defective timing
Compression Incorrect valve clearance
Loosened spark plug or defective gasket
Loosened cylinder head bolt or defective gasket
Improper valve sealing
Defective valve stem
Worn or broken valve spring
Worn or stuck piston rings, cylinder and piston
Incorrect valve timing
Improper engine oil (low viscosity)
Engine control system <Ref. to EN(H4SO)(diag)-2, Basic Diagnostic Procedure.>
Intake system Defective intake manifold gasket
Defective throttle body gasket
Fuel line Defective fuel pump and relay
Clogged fuel line
Lack of or insufficient fuel
Belt Trouble
Defective timing
Compression Incorrect valve clearance
Loosened spark plug or defective gasket
Loosened cylinder head bolt or defective gasket
Improper valve sealing
Defective valve stem
Worn or broken valve spring
Worn or stuck piston rings, cylinder and piston
Incorrect valve timing
Improper engine oil (low viscosity)
ME(H4SO)-89
MECHANICAL
Possible cause RANK
B
C
C
B
A
A
B
C
C
C
C
A
A
B
B
B
C
C
C
C
C
B
C
B
B
A
B
B
C
C
B
B
B
C
C
C
C
C
B
C
B
B