Engine Trouble In General - Subaru Legacy 2002 Service Manual

Mechanical

19. Engine Trouble in General

S143095
A: INSPECTION
NOTE:
"RANK" shown in the chart refer to the possibility of reason for the trouble in order ("Very often" to "Rarely")
A — Very often
B — Sometimes
C — Rarely
TROUBLE
1. Engine will not start.
1) Starter does not turn.
2) Initial combustion does
not occur.
ENGINE TROUBLE IN GENERAL
S143095A10
PROBLEM PARTS, ETC.
¼ Starter
¼ Battery
¼ Friction
¼ Starter
¼ Engine control system <Ref. to EN(H6)-2, Basic Diagnostic Procedure.>
¼ Fuel line
¼ Chain
¼ Compression
ME(H6)-76
POSSIBLE CAUSE
¼ Defective battery-to-starter harness
¼ Defective starter switch
¼ Defective inhibitor switch or neutral switch
¼ Defective starter
¼ Poor terminal connection
¼ Run-down battery
¼ Defective charging system
¼ Seizure of crankshaft and connecting rod bearing
¼ Seized camshaft
¼ Seized or stuck piston and cylinder
¼ Defective starter
¼ Defective fuel pump and relay
¼ Lack of or insufficient fuel
¼ Defective
¼ Defective timing
¼ Incorrect valve clearance
¼ Loosened spark plugs or defective gasket
¼ Loosened cylinder head bolts or defective gasket
¼ Improper valve seating
¼ Defective valve stem
¼ Worn or broken valve spring
¼ Worn or stuck piston rings, cylinder and piston
¼ Incorrect valve timing
¼ Improper engine oil (low viscosity)
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