Black Smoke with catch can! HELP problems! (pix) - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

kuruptR · 06-24-2004, 06:51 PM

Iv had some big problems with my car idling, like it has a vacuum leak or something...changed all my vacuum lines and nothing, still idles the same.

I finally found out why my car idles so badly, it was becuase my oil catch can was not in a loop, it was off the valve cover T to open atmosphere. With this set up my car idles really badly. (jumps from 1000 rpm to 300rpm then dies)

With some tinkering, and looking at some pictures on the internet, i decided to put the open atmosphere side of my oil catch can into my intake (got this idea from the pictures i did all the scribbling on.)

NOW IT RUNS PERFECT!? ----> SIDE EFFECT? Black Smoke all the time from low rpms to high.

Well i dont want any black smoke so i put it back to original set up with open atmosphere(plugged) BACK TO IDLING LIKE CRAP!

Heres the pics, tell what you think and what am i doing WRONG>!??!?!

kcolyer27 · 06-24-2004, 08:27 PM

Here is mine. HOpe it helps. Catch tank is taht circular thing up front

kuruptR · 06-24-2004, 09:43 PM

does your second line go into the intake? if so thats how mine was, then my motor started smoking.

89s132b · 06-24-2004, 11:03 PM

Mine is set up just like your first pic. I don't get any smoke. Try setting it up like 2nd pic but with a breather (small cone air filter) instead of just blocking it off.

kuruptR · 06-25-2004, 02:46 PM

can any one explain why it would cause my motor to smoke?

06-24-2004, 06:51 PM	#1
kuruptR Zilvia FREAK! Join Date: Jan 2003 Location: UpNorth Posts: 1,046 Trader Rating: (1) Feedback Score: 1 reviews	Black Smoke with catch can! HELP problems! (pix) Iv had some big problems with my car idling, like it has a vacuum leak or something...changed all my vacuum lines and nothing, still idles the same. I finally found out why my car idles so badly, it was becuase my oil catch can was not in a loop, it was off the valve cover T to open atmosphere. With this set up my car idles really badly. (jumps from 1000 rpm to 300rpm then dies) With some tinkering, and looking at some pictures on the internet, i decided to put the open atmosphere side of my oil catch can into my intake (got this idea from the pictures i did all the scribbling on.) NOW IT RUNS PERFECT!? ----> SIDE EFFECT? Black Smoke all the time from low rpms to high. Well i dont want any black smoke so i put it back to original set up with open atmosphere(plugged) BACK TO IDLING LIKE CRAP! Heres the pics, tell what you think and what am i doing WRONG>!??!?! __________________ @woooster on instagram

06-24-2004, 09:43 PM	#3
kuruptR Zilvia FREAK! Join Date: Jan 2003 Location: UpNorth Posts: 1,046 Trader Rating: (1) Feedback Score: 1 reviews	does your second line go into the intake? if so thats how mine was, then my motor started smoking. __________________ @woooster on instagram

06-25-2004, 02:46 PM	#5
kuruptR Zilvia FREAK! Join Date: Jan 2003 Location: UpNorth Posts: 1,046 Trader Rating: (1) Feedback Score: 1 reviews	can any one explain why it would cause my motor to smoke? __________________ @woooster on instagram

06-24-2004, 08:27 PM	#2
kcolyer27 BANNED Join Date: Jan 2004 Location: cleveland Posts: 586 Trader Rating: (0) Feedback Score: 0 reviews	Here is mine. HOpe it helps. Catch tank is taht circular thing up front

06-24-2004, 11:03 PM	#4
89s132b Zilvia Member Join Date: Apr 2003 Location: Oklahoma Posts: 220 Trader Rating: (0) Feedback Score: 0 reviews	Mine is set up just like your first pic. I don't get any smoke. Try setting it up like 2nd pic but with a breather (small cone air filter) instead of just blocking it off.