WyoF350turbo
Registered User
Hi
So i have a 1993 F350 crew cab with a ZF5 and a factory turboed 7.3 IDI, so my problem is that I am loosing coolant ad having a hard time figuring out what is happening and what is going on the truck has 189000 miles on it. I have seen no white smoke or sickly antifreeze smell from the exhaust like a classic head gasket. I had to replace the o-rings on the oil cooler as they failed and have been replaced. I have pressure tested the cooling system and the system holds pressure I did this with a full cooling system and no oil and left the drain plug out to see if anything made it to the pan and nothing system held pressure. Refilled with oil and started truck let it run nothing out of the ordinary and no weird noises no oil in coolant or coolant in oil, let truck sit overnight went and checked nothing out of the ordinary started and let idle watched everything and everything was good. Let sit overnight again and now the radiator is low enough to see the baffles and the oil is mixed, pressure tested coolant system again and it holds pressure, pulled glow plugs and got some coolant out of the number 4 cylinder thru glow plug hole. Now I am wondering if I am overlooking something or if this is a head gasket gone bad or worse, when the truck is running there is no bubbling or burping into the radiator or coolant bottle. Anything i have overlooked or any ideas from anyone??????
Thanks sorry its long
Ralph
So i have a 1993 F350 crew cab with a ZF5 and a factory turboed 7.3 IDI, so my problem is that I am loosing coolant ad having a hard time figuring out what is happening and what is going on the truck has 189000 miles on it. I have seen no white smoke or sickly antifreeze smell from the exhaust like a classic head gasket. I had to replace the o-rings on the oil cooler as they failed and have been replaced. I have pressure tested the cooling system and the system holds pressure I did this with a full cooling system and no oil and left the drain plug out to see if anything made it to the pan and nothing system held pressure. Refilled with oil and started truck let it run nothing out of the ordinary and no weird noises no oil in coolant or coolant in oil, let truck sit overnight went and checked nothing out of the ordinary started and let idle watched everything and everything was good. Let sit overnight again and now the radiator is low enough to see the baffles and the oil is mixed, pressure tested coolant system again and it holds pressure, pulled glow plugs and got some coolant out of the number 4 cylinder thru glow plug hole. Now I am wondering if I am overlooking something or if this is a head gasket gone bad or worse, when the truck is running there is no bubbling or burping into the radiator or coolant bottle. Anything i have overlooked or any ideas from anyone??????
Thanks sorry its long
Ralph