My 85 egale amc leaks on the right side of the valve cover what do i do

if the spark plugs are in the rocker cover , you will need new seals for them as well

look for radiator leaks or radiator overflow container leaks or cracks

Try checking the oil pressure sensor

usually due to overtightening the bolts and distorting the rocker cover flkange. Torque is very low. straighten flange and use a gasket sealer on each side of gasket and do not tighten more than 10 ft lbs.

She should still have some life left in her. The water pump isn't too hard to replace, really no special tools needed. When motors get around that mileage, they will use some oil and have some leaks. As the engine wears, blow by developes and will cause gaskets to leak. I would also check the PCV valve.

change the gasket

i would just try puting new gaskets in where it is leaking

most likely it is the valve cover gasket. it covers the valve train where there is alot of oil to lube the top of the motor. if the head gasket was leaking it may have more signs of running poorly. also having coolant leaks also. so i will have to say valve cover gasket. now usally you may have a oil burning smell with it depending on the area of the lek but not always.

the valve cover can easily be seen when the hood is open. it is right on the top and where it meets the clyinder head is where the gasket is and the leak can be seen.

if you have more question please ask.

your valve cover gasket may have blown. This can happen if you overfill above the required dipstick level. take off the valve cover and check the gasket. Better to be under the level than over. The oil preassure will try to blow from where ever there is a weak gasket.

Any quality gasket from any parts store will work.