My 1996 honda accord 6 cylinder has an oil leak and I can see oil on the exhaust manifold as in it dripped from somewhere onto it. What would it be coming fro though and or what is it caused by. Also when I start car after its been sitting for a while it makes a tickibg noise coming from under the hood but once car has been on and warmed up it stops. Someone said might be oil related? And also the car seems ro be riding a little rough. Please all help and advice greatly appreciated.