I am looking at a 94 ram 1500 4x4 to use for hunting and fishing, i was told the motor needed some work. A very good "shade-tree" mechanic ( who works on our limos) he tought it might have a cracked head, it does over heat, water pump works ( new ). But even after it runs for a few minutes it does not have any white smoke, nor black smoke from bad rings, and i did not see any signs of water on the oil dip-stick. It does suck in your hand on the exhaust, only at a certain time like when a certain piston fires ( v-8 duel exhaust ) if you hold it right up against the tip. My question is could it be a cracked head, craked head gasket, or could it have a stuck valve in to open position? thanks any help would be great

 

My suggestion is to get the cooling system pressure tested. Check the oil cap for foaming sludge. Are you loosing coolant or is it just overheating? Check the radiator to make sure it isn't plugged also check and see if it has a clutch fan....the fan clutch could be faulty too. Oh check the rad cap as well to insure that it is sealing properly