My 95 with 150k miles developed a miss, I drove it home about 30 miles and started researching the problem. I changed plugs and found two front plugs on the pass side slightly wet. After changing the plugs, I started it and still had the miss, while I was checking for vacuum leaks, it made a really bad upper valve train noise. I immediately shut it down and highly suspect a broken valve spring. I think it is on the pass side but I don't know any way to tell except remove the valve cover. I will pull the pass valve cover tomorrow and see what I find.