4.0 oil blow by problems on a 1993 Jeep Wrangler Sahara. - Jeep Wrangler Forum
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Old 03-24-2010, 08:48 PM   #1
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4.0 oil blow by problems on a 1993 Jeep Wrangler Sahara.


Anyone got any ideas on how I can fix this. Oh its comming out of the front pvc valve on valve cover.

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Old 03-25-2010, 02:33 PM   #2
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First check the PCV to see if its good. It should rattle when you take it out. They can usually be cleaned with carb cleaner.
Mine has the CCV system with no PCV, just fresh air inlet from air cleaner and then a metered connection to the intake.
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