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What Is This?
There is an O-ring in the Cy Head above Spark Plug as shown in picture. 2010 Expy 5.4 3V 4WD I have looked everywhere, Diagrams don't even show it. Mine were dried, brittle etc... I assume it's to help keep moisture out. Would love to reinstall with new ones. Thanks.- NoScope
- Thread
- Replies: 4
- Forum: 3rd Gen - 2007 - 2017
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Spark Plug Boot Seal?
Doing timing job. While cleaning cylinder head I came across O-rings were plugs screw into. Anyone have a part# or what the heck they're called?- NoScope
- Thread
- Replies: 9
- Forum: 3rd Gen - 2007 - 2017
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P0401 Fix & Wake Up Call
2001 XLT 2WD, Engine actually ran very good, gas mileage was'nt great but... Through the help of this forum I was finally able to resolve a long standing 'Check Engine' Light Issue. I had Codes P0171, P0174 (Lean Banks) and the P0401 (Insufficient EGR Flow) After cleaning MAF, checking vaccum...- NoScope
- Thread
- Replies: 2
- Forum: Engine & Performance
