3.7 v6 oil leaking into the air cleaner
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Joined: Apr 2021
Posts: 2
3.7 v6 oil leaking into the air cleaner
Oil leak Mustang 2011 3.7 v6
Problem: Oil leaking into air cleaner box
1. Oil No engine error code
2. Oil coming from left (Driver side) valve cover vent hose into air duct
3. I checked changed pvc valve (Right side) old one was good
4. Looking for a solution diagnoses?
Problem: Oil leaking into air cleaner box
1. Oil No engine error code
2. Oil coming from left (Driver side) valve cover vent hose into air duct
3. I checked changed pvc valve (Right side) old one was good
4. Looking for a solution diagnoses?
Last edited by Topher; Apr 18, 2021 at 03:57 PM.
Senior Member
Joined: Apr 2020
Posts: 1,077
I can find the tsb later if you want but ford determined that the original design for the valve cover allowed a small amount of oil to mix with the air and flow into the airbox. They redesigned the valve cover to fix this but there is no harm from leaving it as is.
Last edited by scott.butler4; Apr 18, 2021 at 04:28 PM.
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