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Jeep Wrangler YJ
YJ General Discussion
CCV
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<blockquote data-quote="machoheadgames" data-source="post: 429710" data-attributes="member: 18789"><p>It is officially a CCV system. PCV involves an actual PCV valve that goes bad over time. CCV is crankcase ventilation. Not sure what it really accomplishes as an end goal, but if basically mixes any excess oil vapor with fresh air from the intake, and runs that back through the intake manifold. Older vehicles and many modern vehicles have PCV but the 2.5 and 4.0 on a YJ are officially CCV. I believe the 87-90 2.5 and 4.2 have PCV.</p><p></p><p>As for the parts, I think Doop is steering you in the right direction based on everything I’ve seen. Acquiring parts can be confusing, it’s difficult to keep up with the valve cover changes over the years. Seems like between 93 and 94 is the hard break for the elbow change. Then I see lots of YJs from all 91-95s and see two types of oil caps with no explanation why each one came with which. Weird typical Jeep crap.</p></blockquote><p></p>
[QUOTE="machoheadgames, post: 429710, member: 18789"] It is officially a CCV system. PCV involves an actual PCV valve that goes bad over time. CCV is crankcase ventilation. Not sure what it really accomplishes as an end goal, but if basically mixes any excess oil vapor with fresh air from the intake, and runs that back through the intake manifold. Older vehicles and many modern vehicles have PCV but the 2.5 and 4.0 on a YJ are officially CCV. I believe the 87-90 2.5 and 4.2 have PCV. As for the parts, I think Doop is steering you in the right direction based on everything I’ve seen. Acquiring parts can be confusing, it’s difficult to keep up with the valve cover changes over the years. Seems like between 93 and 94 is the hard break for the elbow change. Then I see lots of YJs from all 91-95s and see two types of oil caps with no explanation why each one came with which. Weird typical Jeep crap. [/QUOTE]
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Jeep Wrangler YJ
YJ General Discussion
CCV
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