Another possibility the CP3 Shaft seals , the weep hole is to allow fuel to leak out threw this hole and the front casting has a channel to allow the fuel to leak out between the cover and the CP3 manifold. If your dipstick shows your making oil this is most likely the culprit , the weep hole or the channel gets plugged over time and the fuel go's right into the crank case. Most CP3 shaft seals start to leak at around 250-300K miles.
When they completely fail you can blow oil an fuel out the breather by the gallon, Check Google out for oil all over truck / trailer, Owners have drained 5 gallons of oil/fuel out.
If this happen to bluetec motors you will be putting oil into the intake... Not good....
When they completely fail you can blow oil an fuel out the breather by the gallon, Check Google out for oil all over truck / trailer, Owners have drained 5 gallons of oil/fuel out.
If this happen to bluetec motors you will be putting oil into the intake... Not good....