ME(H4SO)-31
MECHANICAL
Valve Clearance
8. Valve Clearance
A: INSPECTION
NOTE:
Inspection and adjustment of the valve clearance
should be performed while engine is cold.
1) Set the vehicle on a lift.
2) Lift-up the vehicle.
3) Remove the under cover.
4) Lower the vehicle.
5) Disconnect the ground cable from battery.
6) Remove the belt cover (LH).
7) When inspecting the #1 and #3 cylinders:
(1) Disconnect the spark plug cords from spark
plugs RH side.
REMOVAL, Spark Plug.>
(2) Disconnect the PCV hose from rocker cover
(RH).
(3) Remove the bolts, and then remove the
rocker cover (RH).
8) When inspecting the #2 and #4 cylinders:
(1) Disconnect the spark plug cords from spark
plugs (LH Side)
REMOVAL, Spark Plug.>
(2) Disconnect the PCV hose from rocker cover
(LH).
(3) Remove the bolts, and then remove the
rocker cover (LH).
9) Set the #1 cylinder piston to top dead center of
compression stroke by rotating crank pulley clock-
wise using a socket wrench.NOTE:
When arrow mark (A) on the cam sprocket (LH)
comes exactly to the top, #1 cylinder piston is
brought to the top dead center of compression
stroke.
10) Measure the #1 cylinder valve clearance by us-
ing thickness gauge.
CAUTION:
Insert the thickness gauge (A) in as horizon-
tal a direction as possible with respect to the
valve stem end face.
Measure the exhaust valve clearances while
lifting-up the vehicle.
Valve clearance (Standard):
Intake;
0.20
±0.04 mm (0.0079±0.0016 in)
Exhaust;
0.25
±0.04 mm (0.0098±0.0016 in)
11) If necessary, adjust the valve clearance.
to ME(H4SO)-32, ADJUSTMENT, Valve Clear-
ance.>
12) Similar to measurement procedures used for
#1 cylinder, measure the #2, #3 and #4 cylinder
valve clearances.
NOTE:
Be sure to set the cylinder pistons to their re-
spective top dead centers on compression stroke
before measuring valve clearances.
FU-00009
ME-00199
ME-00200
(A)
ME-00201
(A)
