My motor is freshly built. I recently hooked up a catchcan(about 200 miles ago). The motor hasn't seen boost yet. Some very light smoke vapor is coming from the catchcan breather(smells like fuel). It only started after what I thought was some spilled fuel that somehow ran into the "black box" line when I changed injectors. So I pulled the catch can today and cleaned it. There was some liquid, almost like fuel. No oil at all. I cleaned the filter and everything... Still some smoke(I'll probably pull the box off tomorrow and clean it).
I never got any smoke before the catch can install with the breather on the valve cover. I have it setup with the valve cover line going to the catch, line from the black box to the catch, and a breather on top. No PCV. Weird thing is it didn't smoke when I first installed it either.. hmm. Any help is appreciated. and yes I searched one person had the exact problem but an answer was never given.

Nate

 

is the catch can venting off the head or block?

 

both. it's set up like the endyn catch.

 

It just a little blow by is what I think. Mine does it to.

 

Ok, I've heard some say it's normal for a little so I shouldn't worry about it I guess

 

Could it just be moisture? Although I don't have an Endyn type setup, my pneumatic catch cans were working fine during the summer and fall months, but once winter hit, I started collecting fuel smelling moisture + oil.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by The Dude &raquo;</TD></TR><TR><TD CLASS="quote">Could it just be moisture? Although I don't have an Endyn type setup, my pneumatic catch cans were working fine during the summer and fall months, but once winter hit, I started collecting fuel smelling moisture + oil.</TD></TR></TABLE>

Could very well be! It rains almost every day here during the winter, plus stays around 40* or so, so that could be it