1995 SUBARU LEGACY PCV

4. Valve Rocker Assembly
A: REMOVAL
B2M0418A
B2M0382A
1) Disconnect PCV hose and remove rocker cover.
2) Removal of valve rocker assembly
(1) Remove bolts

1through
4in numerical sequence.
CAUTION:
Leave two or three threads of bolt

1engaged to retain
valve rocker assembly.
(2) Equally loosen bolts

5through
8all the way, being
careful that knock pin is not gouged.
B2M0414
(3) Remove valve rocker assembly.
CAUTION:
Locate valve rocker assembly with air vent (on rocker
arm) facing upward or dip it in engine oil after removal.
27
2-3SERVICE PROCEDURE
4. Valve Rocker Assembly

E: INSTALLATION
B2M0418B
Tightening torque: N⋅m (kg-m, ft-lb)
T1: 5±1 (0.5±0.1, 3.6±0.7)
T2: 12±1 (1.2±0.1, 8.7±0.7)
B2M0382B
1) Installation of valve rocker assembly
(1) Temporarily tighten bolts

1through
4equally as
shown in Figure.
CAUTION:
Do not allow valve rocker assembly to gouge knock
pins.
(2) Tighten bolts

5through
8to specified torque.
(3) Tighten bolts

1through
4to specified torque.
2) Install rocker cover and connect PCV hose.
32
2-3SERVICE PROCEDURE
4. Valve Rocker Assembly

TROUBLE
Engine will not start.
Rough idle and engine stall
Low output, hesitation and poor acceleration
Surging
Engine does not return to idle.
Dieseling (Run-on)
After burning in exhaust system
Knocking
Excessive engine oil consumption
Excessive fuel consumption Starter does not turn.
Initial combustion does not occur.
Initial combustion occurs.
Engine stalls after initial combustion.
INTAKE SYSTEM
2111 3Loosened or cracked intake air pipe
3111 3 1Loosened or cracked blow-by hose
31211 2Loosened or cracked vacuum hose
22222Defective intake manifold gasket
22222Defective throttle body gasket
322 2 2Defective PCV valve
222 323Loosened oil filler cap
3312 1Dirty air cleaner element
FUEL LINE
13 322Defective fuel pump and relay
33322Clogged fuel line
222233Lack of or insufficient fuel
BELT
222Defective
222322 22 2Defective timing
FRICTION
3Seizure of crankshaft and connecting rod bearing
3Seized camshaft
3Seized or stuck piston and cylinder
COMPRESSION
333222 23 2Defective hydraulic lash adjuster
333223 3 3Loosened spark plugs or defective gasket
333223 3 3Loosened cylinder head bolts or defective gasket
333223 2 2Improper valve seating
333333 3 13Defective valve stem
222223 3 3Worn or broken valve spring
333233 3 12Worn or stuck piston rings, cylinder and piston
222111 12 2Incorrect valve timing
222222Improper engine oil (low viscosity)
76
2-3DIAGNOSTICS
1. Engine Trouble in General

1. Collector Chamber and Intake
Manifold
B2M0338A

1Intake manifold gasket RH


2Intake manifold gasket LH


3Fuel injector pipe insulator


4Fuel injector pipe


5O-ring A


6O-ring B


7Fuel injector


8Insulator


9Fuel injector cap


10Gasket


11Engine coolant hose B


12Air by-pass hose


13Idle air control solenoid valve


14Engine coolant hose A

15Nipple (AT model)


16Plug


17PCV valve


18Purge control solenoid valve


19Nipple


20BPT


21BPT holder bracket


22Back pressure hose


23EGR vacuum hose A


24EGR vacuum pipe


25EGR vacuum hose C


26EGR valve


27Gasket


28EGR vacuum hose B

29EGR solenoid valve


30EGR pipe


31Intake manifold
Tightening torque: N⋅m (kg-m, ft-lb)
T1: 3.4±0.5 (0.35±0.05, 2.5±0.4)
T2: 6.4±0.5 (0.65±0.05, 4.7±0.4)
T3: 16±1.5 (1.6±0.15, 11.6±1.1)
T4: 19±1 (1.9±0.1, 13.7±0.7)
T5: 19±1.5 (1.9±0.15, 13.7±1.1)
T6: 23±3 (2.3±0.3, 16.6±2.2)
T7: 25±2 (2.5±0.2, 18.1±1.4)
T8: 34±2 (3.5±0.2, 25.3±1.4)
2
2-7COMPONENT PARTS
1. Collector Chamber and Intake Manifold

1Engine control module (ECM)

2Ignition coil

3Ignitor

4Crankshaft position sensor

5Camshaft position sensor

6Throttle position sensor

7Fuel injectors

8Pressure regulator

9Engine coolant temperature sensor

10Mass air flow sensor

11Idle air control solenoid valve

12Purge control solenoid valve

13Fuel pump

14PCV valve

15Air cleaner

16Canister

17Main relay

18Fuel pump relay

19Fuel filter

20Front catalytic converter

21Rear catalytic converter

22EGR valve
23EGR control solenoid valve

24Radiator fan

25Radiator fan relay

26Pressure sources switching solenoid valve (AT vehicles only)

27Knock sensor

28Back-pressure transducer (AT vehicles only)

29Front oxygen sensor

30Rear oxygen sensor

31Pressure sensor (AT vehicles only)

32A/C compressor

33Inhibitor switch

34CHECK ENGINE malfunction indicator lamp (MIL)

35Tachometer

36A/C relay

37A/C control module

38Ignition switch

39Transmission control module (TCM) (AT vehicles only)

40ABS/TCS control module (TCS equipped models)

41Vehicle speed sensor

42Data link connector (Subaru select monitor)

43Data link connector (OBD-II general scan tool)

44Two way valve
5
2-7ON-BOARD DIAGNOSTICS II SYSTEM
1. General