Focus Fanatics - View Single Post - How many People with the SPI had a Valve Seat Failure?
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Old 05-17-2011, 11:07 PM   #52
a_2000_se
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Join Date: Feb 2009
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What I Drive: 2000 SE SOHC SPI, Compression @ 164

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^^^^

There's a theory floating around that the dropped valve seat didn't start showing up til EGR was equipped. And EGR reintroduces exhausts gases at the #4 intake runner. Higher intake temps on #4.

Wives tale..... Idk.
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Replaced #4 Piston, Rings, Rod+Bearings, AERA Re-Manufactured Cylinder Head and a light Hone. Then CLEANED the hell out of everything.
60k+ miles.
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