My engine is leaking a lot of oil down the right side, what is wrong with it? on 1998 Ford Explorer

It leaks a lot of oil, drivers side of the engine down to the exhaust until it smokes white smoke. It empty's all the oil so I have to constantly put oil in it. There is a puddle of oil underneath my vehicle where ever I park. No engine light, puttering, pinging, thumping, ticking or fluttering while driving it which has me concerned also, just the smoke from burning oil. Someone told me it was my valve covers or my head gasket; O-rings. It started after I had the exhaust manifold replaced. Now the vehicle stays parked because it smokes really bad and I cannot keep enough oil in it to drive it anywhere.

by in Buckeye, AZ on October 06, 2012
1 answer
ANSWER by on October 06, 2012
CHECK OR HAVE OIL SENDING UNIT CHECKED. ALSO LEAKING OIL FILTER,HOLE IN OIL PAN. WHICH MANIFOLD WAS REPLACED? DRIVER'S SIDE IS LEFT SIDE! ORGINIAL QUESTION SAYS LEAK DOWN RIGHT SIDE. ALSO DID THIS HAPPEN THE EXACT SAME TIME OF EXHAUST WORK?