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Old 04-04-2011, 07:53 AM   #15
Focus Rookie
Join Date: Jan 2011
Fan#: 82672
Location: jacksonville, FL
What I Drive: 2002 blue spi

Posts: 18
FF Reputation: 1 drath85 Good Standing Member
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mine just happened actually, 140,000mi, #4cyl. just did a total rebuild with a 20 over bore and a port and polish, new valves and new seats and it runs fantastic now! i can feel a lot more horsepower than before.
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