How do you adjust valves or are they self adjusting

Valve setting? Most engine valves have an automatic adjuster to self adjust the setting. You didn't say you had it apart. So, I'm thinking you have a dirty condition that would make the adjuster or valve tap. If so good additives just for both those conditions can restore the adjusting by cleaning and freeing the ailing parts. Try the link below for more info and needed product. Stops noisy engine valve tap in 10 minutes or free Add Driving ends tap

The computer doesn't self adjust or relearn in that way. That is beyond its limits. Relearning has to do with tiny amounts of difference in fuel trim for the injectors. Idle is more controlled by the idle control motor or valve.

They are NOT hydraulics. That started in 1990. They were adjustable in 88 and 89.

Yes they are.

all saturn s series and l-series cars have hydralic valve that do not need adjustments or even have anyway to adjust if you have a tick sound from a sl1 pull the valve cover off and check the rocker arm shaft bolts they back out the cover gasket can be reused if its not torn or falling off

If it's a "K" code hi-po 289, then it has solid lifters and the valve clearance is adjustable. If a standard 289, then it has hydraulic lifters which are zero clearance and self adjusting, i.e. there is no adjusting screw on the rocker arm.

The tappets are essentially little levers that make the valves move up an down to allow fuel and air to enter your cylinder and exhaust to exit the cylinder (essentially connect the valve to the cam shaft). The tappets may be adjusted by screws, shims or even self-adjusting hydraulic lifters.

The risk is that you will damage the valve seat (where the valve contacts the cylinder head to close the cylinder area during compression and combustion).

A dealer should be able to adjust them for about 150 quid if they are not the self-adjusting hydraulic type. If self-adjusting feature is broken, then price will be higher..

valve adjustment are a ting of the past, hydraulic lifters are self adjusting

if the car has variable valve timing then yes you cant adjust rocker arms they are set with the timing and are probaly hydrolic not mechcanical good luck

the valves are hydraulic, this means they are zero lash, no adjustment required.