I have resurrected my Loyale 4WD with the 3EAT auto trans.  I replaced the timing belt while I was trying to address the low oil pressure problem. Since a new oil pump is not available, I replace the mickey mouse gasket and water pump.  Even though oil pressure improved a little, the valves clatter intermittently, even when oil pressure is up. What is the remedy?  I want to make a plan and gather the necessary parts before hand.  In addition, are there some modifications I can make to gain addit