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Old 03-24-2011, 05:21 PM   #2560
99STM
Scooby Specialist
 
Member#: 219160
Join Date: Aug 2009
Chapter/Region: MWSOC
Location: Lincoln, NE
Vehicle:
2002 Impreza WRX
AW (6MT, E85, EWG, VF39)

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Unfortunately, I couldn't get a log. However, when I did the pull, right around 3k rpms it starts to stutter and misfire. I got a cel that I haven't pulled yet but I am almost positive its a misfire code. After a out 4k it starts to lean out to 12:1 then leans out more. I quit the pull after it got to 13:1. I can admit when im wrong and I believe you were right. The symptoms sound a lot like the fuel pump isn't flowing enough. But would that cause the mid range stuttering?
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