Rocker Adjustment sequence for T reg Clio 2 8valve

No torque sequence on rocker arm bolts. 11 ft lbs plus 30 degrees.
A torque wrench rated for inch lbs should be a finer adjustment.

according to several searches on this subject:
your valves require no additional adjustment.
Install pushrod and rocker arms and rocker arm nuts. Tighten nuts to 22 ft. lbs. (30 Nm).

No adjustment. Put the rocker arms on and tighten to specifications. The hydraulic lifters are in the head, and they will automatically adjust.

possible air leak in intake manifold

Whats this T reg thing please ,que es esta mielda tonto ingles ,right now you understand we dont all know this secret code ,now to me T reg is 1978 the year i re-registered my old german tranny van and then escaped away from that class ruled hypocrytical overpopulated country,Now to adjust the tappets this is done by the rule of nine ,one down adjust nine two down and adjust severn and so on till you end up at eight down adjust one ,simple isnt it when you know

We do not have this make in the USA so have no info. Sorry.

hold the cetral locking lock all button down until the doors lock and unlock. The imobilser light goes solid red. At this point you have 10 to press the botton on your key 2 times . the doors will unlock and lock.

A rocker arm is the arm that sits on top of the valve stem and connects to the push rods 'the push rods sit on the cam so when engine is running, the push rods go up and down in a timed sequence and with the rocker arms, open and close the inlet and exhaust valves. the rocker arm is located inside the valve(rocker)cover .If the rocker arm gets loose or comes out.
Check the nuts on the shaft which holds the rocker arms.either the shaft or nuts are got loose.They need to be tightened.Don't make it too tight or too loose.  Too tight,and they don't flutter right. Too loose,and they allow the rocker arms to wiggle out of whack. Other possibility can be  something is broken, bent, collapsed, or out of adjustment. 
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misfire could happen if you have a leak in the intake or exhause valve , or if your engine running rich thats mean too much fuel coming to the engine . you should check oxygen sensor

seal around the sunroof with some sealent