I have a 91 Toyota pickup 22re motor. I was leaking from EGR cooler plate. Which caused white smoke. I replaced that with a factory gasket. The leak stopped but still have white smoke not as bad but enough to not drive. I ran it 20 to 30 min. Tighten everything down. Oil is fine and coolant in the radiator doesn't bubble or shoot out. I pulled two spark plugs and they just had oil on the thread. No outside leaks. I have no idea what it is and where to go from here. I think it has to be coolant or water since it's white smoke. Anyone could help that would be awesome thanks in advance.