I purchased a 1996 Volvo for my daughter and shortly after noticed a bad oil leak. The oil is leaking around the cam sensor around the top of the engine. I pulled the cam sensor off and noticed that someone had drilled a hole in it. I replaced this part and it is still leaking badly. Do I have a head gasket leak that is pulling in air and causing pressure build up in the crank case? Please help?

 

You need to replace the Cam seals.If it is leaking into the cam sensor then the seals are leaking.