Hello. I have a 2002 Toyota Tacoma v6 3.4 L engine. When driving oil was leaking from the valve cover onto the exhaust and it makes a lot of smoke. I took it apart and noticed a big crack in it. I replaced the valve cover with another one from a junk yard and put that in. It stopped some of the the oil but it looks like there is more oil coming from near where the exhaust meets the engine. Any ideas of where it could be leaking from?