Service Manuals, User Guides, Schematic Diagrams or docs for : . Car Manuals Subaru Impreza 2001-2002.2004-2007 Approved Subaru Impreza 2004 WRX STi 02. ENGINE SECTION (STi) 04. MECHANICAL 08. Valve Clearance
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VALVE CLEARANCE
MECHANICAL
8. Valve Clearance 10) When inspecting the #2 and #4 cylinders:
(1) Disconnect the battery cable, and then re-
A: INSPECTION move the battery and battery carrier.
Inspection and adjustment of the valve clearance
should be performed while engine is cold.
1) Set the vehicle on a lift.
2) Disconnect the ground cable from battery.
ME-00013
(2) Remove the bolt which secures the engine
harness bracket onto body.
FU-00009
3) Remove the air intake duct.
4) Remove the bolts which secure the timing belt
cover (RH).
5) Lift-up the vehicle.
6) Remove the under cover.
7) Loosen the remaining bolts which secure the
timing belt cover (RH), and then remove the timing
belt cover. ME-00014
8) Lower the vehicle. (3) Disconnect the washer motor connectors.
9) When inspecting the #1 and #3 cylinders:
(1) Pull out the engine harness connector with
bracket from air cleaner upper cover.
ME-00015
(4) Remove the washer tank mounting bolts.
ME-00012
(2) Remove the air cleaner case.
(3) Disconnect the ignition coil connector.
(4) Remove the ignition coil.
(5) Place a suitable container under the vehicle.
(6) Disconnect the PCV hose from rocker cover
(RH).
(7) Remove the bolts, and then remove the
rocker cover (RH). ME-00016
ME(STi)-28
VALVE CLEARANCE
MECHANICAL
(5) Move the washer tank upward. NOTE:
If the measured value is not within specification,
take notes of the value in order to adjust the valve
clearance later on.
(A)
ME-00017
(6) Disconnect the ignition coil connector.
(7) Remove the ignition coil.
ME-00019
(8) Place a suitable container under the vehicle.
(9) Disconnect the PCV hose from rocker cover 13) If necessary, adjust the valve clearance.
(10)Remove the bolts, and then remove the 14) Further turn the crankshaft pulley clockwise.
rocker cover (LH). Using the same procedures described previously,
11) Turn the crankshaft pulley clockwise until arrow and then measure the valve clearances again.
mark on the camshaft sprocket is set to position (1) Set the arrow mark on camshaft sprocket to
shown in the figure. position shown in the figure, and then measure
NOTE: the #2 cylinder exhaust valve and #3 cylinder in-
Turn the crankshaft using socket wrench. take valve clearances.
ME-00733 ME-00734
12) Measure the #1 cylinder intake valve and #3 (2) Set the arrow mark on camshaft sprocket to
cylinder exhaust valve clearance by using thick- position shown in the figure, and then measure
ness gauge (A). the #2 cylinder intake valve and #4 cylinder ex-
haust valve clearances.
NOTE:
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