I have a leak on the right front of my car that cannot seem to be diagnosed on 1999 Toyota Avalon

have replaced radiator, power steering pump, valve cover gaskets, crank and cam shaft seals. Car is still leaking fluid and now I am seeing a bit of steam or smoke come out of the hood. Could I have a bad thermostat gasket? Car does not over heat or fluctuate temperature...stays where it should. My reservoir was empty.

Asked by for the 1999 Toyota Avalon
When the seals were replaced was the timing belt and water pump replaced as well?
Timing belt kit w/water pump, tensioner pulley, idler pulley and hydraulic tensioner along with the cam and crankshaft seals were all replaced. A few months after that was when I had the valve cover gaskets replaced.
Have the cooling system pressure tested to find the leak!
Thank you!!!!! Will do!!!