Some of these engines had Porosity in the Casting of the front Timing Chain Cover behind the Water Pump.....Clean it up real good and take a close look...
I think this was a Factory fix if thats the problem.....If not you will have to remove that cover and de-grease it and coat it with a Epoxy sealer....Reinstall.. Or buy a new one.
Good Luck ! "BH"
Poison spider Evap.Skid/Master craft grab handles/Or-Fab spare tire-can carrier/ Gibson SS Duals/ Q-tec Floor Liners/Hidden Hitch Receiver, AntennaX 7inch, 48" Hi-Lift.
Viet Nam Veteran 69-70, Troop "D" (AIR) 3/4 Cav. ,25th Inf. Div. CUCHI RVN. UH-1H Crew Chief of the "Pinball Wizard" 68-16224. Call Sign "CENTAUR".