i have a b18b, and recently the head was taking off. since ive put it back on and started it the whole left side (driver side) shakes and makes a weird noise almost like a clicking/knock (it isnt a rod knock). could a valve have bent? if so how could that have happened?

the rpm doesnt stay up unless pushing down the gas if not it will shut off also the temp guage is moving when pushing down on the gas.

also i pulled my spark plug wires out and noticed that all the plugs were filled with oil not just a little oil but filled all up were you can see the spark plugs.

can anyone help me out??