Discussion Starter · #1 ·
So I am helping a friend out with some trouble he has been having with his truck. It is an 02 F350 7.4l. The truck started having trouble almost a year ago while hauling an empty 3 car trailer in texas. There was a serious coolant leak somewhere that was ending up in the oil. Obviously the first thought was that the head gaskets were damaged and they were replaced. This didn't help... less then 40 miles later the same issue, low coolant light and frothy dipstick. The next suspect in line was the heads. They were replaced with known good used units and reinstalled. Again... no change. Then the fuel injectors were pulled, inspected, preasure tested and reinstalled. The oil cooler was also pulled and inspected, but not preasure tested for unknown reasons (mechanic had nothing to say). Oh, and the front lower cover (not exactly sure what this is) was also replaced with a new unit. At this point the owner had already purchased another truck and became pretty fed up with this one and it has sat since. I am curious what might be causing this. The owner believes that the oil cooler could be the culprit, but after reading some online posts it seems there should also be oil in the coolant if this was the case. Anyway, any help or suggestions would be greatly appreciated. Thanks.