our 1993 camry with the 2.2l engine had a horrendous oil leak, at least it looked really bad,,
we bought the car used, so I did not know the complete history..
the oil had dirt caked up in it so it made it really really bad ont eh back side and bottom and frame..
i found the valve cover was only hand tight, and so loose it did not need a wrench to unscrew the bolts..
I took off the cover,, cleaned it up really good, bought a new gasket including the spark plug washers int he gasket hit for $20.00.
and it seems to have fixed the leak, but since it was so dirty, it will take 20 cleanings to get it clean enough to make sure there are no more leaks.
I read about this engine notorious for having all kinds of oil leaks...
it seems the desighners have tons of gaskets nears pumps and housings in the worst places..
and it is extremely hard to get to the places behind and under the engine..