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2007
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Impreza WRX STI F4-2.5L DOHC Turbo
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Repair and Diagnosis
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Powertrain Management
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Fuel Delivery and Air Induction
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Fuel Return Line
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Testing and Inspection
Fuel Return Line: Testing and Inspection
INSPECTION
1.
Make sure there are no cracks on the fuel pipes and fuel hoses.
2.
Make sure the fuel pipe and fuel hose connections are tightened firmly.