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Discussion Starter · #1 ·
Came out this morning to find a hose hanging from under 87 YJ (4.2) I traced the hose back and it goes to this black cylindrical thing under washer fluid reservoir.
 

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Thank you So much! If the pcv port has somehow come disconnected ( coupler is missing) would this cause excessive pressure in valve cover?
PCV valves can get clogged. If you have excessive pressure then your PCV system is clogged somewhere. They do tend to get oil clogged up in them from time to time.
 

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Discussion Starter · #5 ·
PCV valves can get clogged. If you have excessive pressure then your PCV system is clogged somewhere. They do tend to get oil clogged up in them from time to time.
The pcv valve is less than a year old and rattles when it shakes. That is why I thought it might be this disconnected hose. Thanks again.
 
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