purpose of rubber O- ring
07-11-2014, 02:16 PM
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purpose of rubber O- ring
Hello all I am needing some help with my truck. I have a 2004 f150 xlt with the 5.4 triton. I am changing plugs and coils broke three plugs but with the Lisle tool the rest of the plug came out easily. My question is at the top of the plug well there is a groove with what appears to be an o-ring in it. When I pulled the coil out the o-ring is damaged and should be replaced I think. Can anyone tell what its for and where I might get new ones. Thanks
