Service Manuals, User Guides, Schematic Diagrams or docs for : . Car Manuals Subaru Legacy 1995-1999 Approved Subaru Legacy 1999 1999 Service Manual ENGINE SECTION ON-CAR SERVICES MSA5TCD99L26
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2-2 [W6A0] SERVICE PROCEDURE
6. Engine Oil Pressure
Diagnosis of engine condition by measurement of manifold vacuum
Vacuum gauge indication Possible engine condition
1. Needle is steady but lower than normal position. This ten- Leakage around intake manifold gasket or disconnection or
dency becomes more evident as engine temperature rises. damaged vacuum hose
2. When engine speed is reduced slowly from higher speed, Back pressure too high, or exhaust system clogged
needle stops temporarily when it is lowering or becomes
steady above normal position.
3. Needle intermittently drops to position lower than normal Leakage around cylinder
position.
4. Needle drops suddenly and intermittently from normal posi- Sticky valves
tion.
5. When engine speed is gradually increased, needle begins Weak or broken valve springs
to vibrate rapidly at certain speed, and then vibration
increases as engine speed increases.
6. Needle vibrates above and below normal position in narrow Defective ignition system or throttle chamber idle adjustment
range.
6. Engine Oil Pressure (3) Loosen lock bolt and slider bolt, and remove
V-belt for generator.
A: MEASUREMENT (4) Remove generator lock bolt.
1) Disconnect battery ground cable. (5) Remove bolt which install generator on
2) Remove generator from bracket. bracket.
(1) Disconnect connector and terminal from
generator.
G2M0090
3) Disconnect connector from oil pressure switch.
G2M0088 4) Remove oil pressure switch from engine cylin-
(2) Remove V-belt cover der block.
G2M0091
G2M0089
5) Connect oil pressure gauge hose to cylinder
block.
6) Connect battery ground cable.
7) Start the engine, and measure oil pressure.
6
SERVICE PROCEDURE [W7A1] 2-2
7. Valve Clearance
7. Valve Clearance
A: INSPECTION
1. 2200 cc MODEL
CAUTION:
Inspection and adjustment of valve clearance
should be performed while engine is cold.
1) Set the vehicle onto the lift.
S2M0242 2) Disconnect battery ground cable.
Oil pressure:
98 kPa (1.0 kg/cm2,14 psi) or more at 800
rpm
294 kPa (3.0 kg/cm2, 43 psi) or more at
5,000 rpm
CAUTION:
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