well if the 1985 did have a 22re ya it wold fit on a 1993 but since they didn't have the 22re in 1985 yet you probably have a 22r or a 20r in the 1985. i would recommend just buying a reconfigured head for the 1993 22re they are cheep like 2-400 bucks then you know its all new and will work
The power rating of the bulb indicates how much power it uses. The power in watts indicates how much energy in Joules the bulb uses in one second. A bulb should have its voltage and power printed on it.
This could be many things but a good rule of thumb is to start with the basics such as is it getting enough fuel, depending on if you have a carb or a injected this should be easy to fix if it is not. Also, you should check your timing, plugs, wires, and distributer.