Quote:
Originally Posted by bergspre
I turn the engine and the valve goes down then suddenly it goes fast up, then when i turn the engine a bit more the valve slowly goes a bit more up until it starts to go down again.
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Thats due to the profile of the cam acting on the cam follower (rocker arm). It needs to have a nice gentle slope to push against the valve spring to open the valve, closing it is easy as the spring helps, hence it's quick. When the valve is closed there should be a small gap between the cam follower (rocker arm) and the top of the valve. This is to allow for expansion as the engine gets hot. This is why you should check it when it's stone cold (maximum gap). Think yourself lucky you have this type of valve adjustment, bucket and shim is a whole other kettle of biscuits.
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