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I've had my car into my local dealer 5 times now for a check engine light code (PO171: air-fuel ration, feedback is stable after warm up, but rich on start up), which is a lean running condition.They checked the mass air flow sensor, engine coolant temp sensor, changed the front O2 sensor, checked the pcv, says the fuel pressure is ok, and have replaced all 4 injectors.
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as soon as they changed the o2 sensor and the injectors before even testing it i knew they were monkeys and not true techs.
please update the story as it progress, interested to know the root of the problem.