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Old 07-15-2009, 08:31 PM   #7 (permalink)
bgd73
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Join Date: Feb 2008
Location: maine
Posts: 758

oldscoob - '87 subaru wagon gl/dr
90 day: 47.06 mpg (US)
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oh no. attempting lean on an inline AND demanding more torque..this could go all the way to bad cylinder walls.
try fuel cleaner, expensive fuel and a few redlines while torquing. The o2 sensor myth about not doing anyhting is an old hoax, they really function today. if it does not go away, you could doubt reaidng and manually check with ohm meters the other stuff beyond o2 sensor.
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