How to check the valve tip clearances
These are checked between the top of the valve stem and the rocker lever (A), with the engine hot or cold. The correct
clearances are 0,20 mm (0,008 in) for inlet valves and 0,45 mm (0.018 in) for exhaust valves. The valve positions are
shown at (B).The order of the valve positions are shown at the table below.
Remark: Number 1 cylinder is at the front of the engine.
Four cylinder engines
1. Turn the crankshaft in the normal direction of rotation until the inlet valve (B8) of number 4 cylinder has just
opened and the exhaust valve (B7) of the same cylinder has not closed completely. Check the clearances of the
valves of number 1 cylinder and adjust them, if it is necessary.
2. Set the valves of number 2 cylinder (B3 and B4) as indicated above for number 4 cylinder. Then check/adjust the
clearances of the valves of number 3 cylinder (B5 and B6).
3. Set the valves of number 1 cylinder (B1 and B2).Then check/adjust the clearances of the valves of number 4
cylinder (B7 and B8).
4. Set the valves of number 3 cylinder (B5 and B6).Then check/adjust the clearances of the valves of number 2
cylinder (B3 and B4).
1 2 3 4 No. of
Cylinder and
Valve
1 2 3 4 5 6 7 8
Valve
I= inlet valve
E=Exhaust valve
I E E I I E E I
4.23
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