Yj 2.5 questions - JeepForum.com
  • 1 Post By Que89YJ
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post #1 of 2 Old 09-14-2016, 06:51 AM Thread Starter
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Yj 2.5 questions

What are the things on top of the valve cover called? My valve cover has oil spray on it and I'm 99% sure my small oil leak is coming from these parts. Question 2 I notice in pics the one on the back has a vent line ran to the intake, I have a cold air intake with no box or cover where should I run the vent (currently there is no vent line on it)? And question 3 where does the vent line for the front one go mine doesn't have a vent line on it either. 1990 yj 2.5 Thanks guys

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post #2 of 2 Old 09-14-2016, 07:41 AM
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1989 YJ Wrangler 
Join Date: Apr 2008
Location: Detroit
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Front is the PCV valve the rear is the CCV breather(round plastic small can looking thing). The CCV just needs a fresh air source you could leave it open. The PCV must be hooked to the intake. It pulls the vapors from the crank case and without it you could have 2 potential issues. 1) high crank case pressure(People have noted oil leaks without it) and 2) sludge buildup
You could always mod the tube for the CAI for the CCV line. Drill a hole and put a tube in it.
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