Pulling vacaum through oil filler tube.

[PKRWUD]

Originally posted by Simi Stang
PKRWUD_
So are you saying that all fuel injected 5.0s, whether mildy or heavily modified, should have the tube from the TB to the oil filler tube connected?

No, I'm not. As I just suggested to Mopar 1, sometimes blocking off the PCV all together, and having dual (at least) breather tubes off the valve cover is the best bet. The tube from the TB to the oil fill tube should be connected if you are using the PCV system. Your case, however, is one where trial and error is going to be the best bet. Not having the baffle will increase the odds of your fears coming true, because at WOT, there is little to no vacuum available for the PCV, but quite a bit at the TB, so the tube from the TB to the oil fill tube could easily suck in any oil that came up the oil fill tube. Try hooking it back up, and see what happens. If it gets oil in the tube going to the TB, then remove it, and consider the same advice I gave to Mopar 1; getting a valve cover with dual breather stacks, and blocking off the PCv completely.

Take care,
~Chris