I got into an a little fender bender in my 95 4runner 2 weeks ago and it's been sitting in my driveway ever since. I started it up this morning and it was smoking from around the exhaust manifold on the drivers side. My valve cover gasket leaks from there so I'm hoping myabe it's just burning off oil. Any other ideas what this could be? Burnt exhaust valve. It was running perfect before I parked it. Thanks in advance. It's got 156,000 miles.