So I just bought a '91 jeep wrangler 4cyl 5spd and just noticed that the oil pressure gauge is shooting to 80 and past when I accelerate. Now I am not mechanically inclined, and I had a buddy of mine who is really good with jeeps look it over right when I got it and he couldn't find anything wrong with it. When I pop off the oil cap, there is a lot of blowback. I even took it to a shop today and the guy told me that I would need a new engine because of a bearing going bad. Now should I believe him, or go beat the guy up who sold me the jeep? I don't really want to put a new engine in it, but I do love my jeep. What do you guys think it is? Anything feedback would be much appreciated.