Might be My First Real Car!!

[.RJ]

compression test on a rotary isnt that hard - put the tester in the trailing plug hole (the one on the bottom - there's 2 plugs per rotor) and hole the valve open and watch it peak cyl pressure with each compression stroke. What you're looking for is large variances in compression - i.e. 105, 105, 60, 105, 105, 60 - that would indicate a busted apex seal. Anything over 100 on those 12a's is good, and they're pretty indestructable. Sometimes the apex seals, or coolant/oil o-rings inside go, but fairly rare. Whatever you do dont ever overheat it, not even for a half second. If the temp gauge is on the run to the red, shut it down.

Good luck - I used to have an '83 GSL, its one of the banners on top