Engine mechanism - Valve clearance
Valve clearance
Adjustment
1. Remove engine plastic hood components.
2. Remove ignition coil components [4G18-3705110].
3. Remove cylinder head cover components [4G18-
1003130].
4. Remove engine right bottom shield.
5. Turn crankshaft to cylinder 1 compression top dead
center position.
(a) Turn crankshaft pulley to align its groove with “o” mark on
timing chain hood.
(b) Check dot marks on camshaft timing sprocket and VVT
timing sprocket, and they should be in a line on timing chain
hood surface as shown in the diagram.
Hint: if not, turn crankshaft for one circle
again
and align the above marks.
6. Check valve clearance.
(a) Only check the valves shown in the diagram.
(1) Measure the clearance between valve tappet and cam-
shaft with plug gauge.
(2) Record valve clearance measuring value exceeding
specification, and this value will be used to determine
valve tappet thickness that needs change.
Valve clearance (cold vehicle)
Intake air
Exhaust
(b) Turn crankshaft for one circle
), and cylinder 4 is
turned to compression top dead center position.
(c) Only check the valves shown in the diagram. Measure valve
clearance (see step (a)).
7. Remove drive belt
Slowly turn drive belt tensioner clockwise to loosen it.
Then remove drive belt and put back drive belt tensioner slowly
and gently.
30
Mark
Mark
Mark
Timing chain
hood surface
Groove
Содержание FC
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