Redtruck-VA
Senior Member
- Joined
- Jun 29, 2010
- Posts
- 5,864
- Reaction score
- 985
- Location
- Virginia
- Ram Year
- 2003 & 1989 D250 RWD
- Engine
- Hemi-5.7, 5.9 12v & 24v diesel
Cats don't like oil. You may well have a damaged, clogged cat. Blowby is where there is oil vapor being pumped out of the crank case caused by gases "blowing by" the piston rings on the power stroke. On a 03 hemi there is a 3/4" rubber hose from the Oil filler tube to the intake inlet tube. On mine I have a little filter attached to this vent hose and it is not connected to the inlet tube.

