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catch can or pcv pre-filter?
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<blockquote data-quote="Taz" data-source="post: 11111190" data-attributes="member: 2127"><p>Here are a few references for those of you who haven't yet figured Google out:</p><p></p><p><a href="http://www.yourautonetwork.com/pcv_valve.html" target="_blank">PCV Valve: Positive Crankshaft Ventilation Valve: Ventilation System: PCV System: Breather Tube: Emission Control</a></p><p></p><p><a href="http://autorepair.about.com/library/a/1h/bl616h.htm" target="_blank">Jeep CJ-7 PCV System Not Working</a></p><p></p><p><a href="http://www.machinerylubrication.com/Read/234/pcv-system" target="_blank">PCV System - A Breath of Fresh Air</a></p><p></p><p>And for those of you who have a tough time with the BIG words, like “breather,” here’s a VIDEO presentation of the PCV system …</p><p></p><p><u><em><strong><a href="http://[URL="http://www.youtube.com/watch?v=c1Jb_sfpZsI[/URL]" target="_blank">YouTube PCV System Presentation</a></strong></em></u></p><p></p><p>Note that a key aspect of the PCV sytem's operation is the intake of fresh, METERED air. That comes from the hose on the passenger side cam cover through what is referred to in the docs as the BREATHER TUBE.</p><p></p><p>If you stick an open catch tank, as above, or a couple of breathers on the car, you're opening the system to UNMETERED AIR. This changes the A/F ratio because the PCM doesn't know its there, so it doesn't add fuel for it.</p><p></p><p>:bored:</p></blockquote><p></p>
[QUOTE="Taz, post: 11111190, member: 2127"] Here are a few references for those of you who haven't yet figured Google out: [url=http://www.yourautonetwork.com/pcv_valve.html]PCV Valve: Positive Crankshaft Ventilation Valve: Ventilation System: PCV System: Breather Tube: Emission Control[/url] [url=http://autorepair.about.com/library/a/1h/bl616h.htm]Jeep CJ-7 PCV System Not Working[/url] [url=http://www.machinerylubrication.com/Read/234/pcv-system]PCV System - A Breath of Fresh Air[/url] And for those of you who have a tough time with the BIG words, like “breather,” here’s a VIDEO presentation of the PCV system … [U][I][B][URL='[URL="http://www.youtube.com/watch?v=c1Jb_sfpZsI[/URL]']YouTube PCV System Presentation[/URL][/B][/I][/U] Note that a key aspect of the PCV sytem's operation is the intake of fresh, METERED air. That comes from the hose on the passenger side cam cover through what is referred to in the docs as the BREATHER TUBE. If you stick an open catch tank, as above, or a couple of breathers on the car, you're opening the system to UNMETERED AIR. This changes the A/F ratio because the PCM doesn't know its there, so it doesn't add fuel for it. :bored: [/QUOTE]
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