Join Date: Nov 2010
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The oil pan was just changed. The sealant used on the pan can make the oil foam and aerated oil loses the hydraulic ability to actuate the injectors properly.
I used Valvoline 15w40 diesel oil and the sealant was the Ford recommended sealant for diesels but it still did it. The only thing I am thinking is that I didn't wait long enough for the sealant to cure before running the engine.
The oil didn't really go bad, it was just contaminated. The diesel shop around here said the issue I had is actually pretty common after engine repairs. They also recommend to use Rotella oil since it has less tendancy to foam.
I really can't believe how well the truck runs now. It seems to idle smoother and have more power than I remember.