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just what it says once started seems fine this motor is new to me guess i should change vst filter and low pressure fuel pumps and see what happens? how about the 02 sensor? just hate to be a parts changer any tips for a guy thats new to yamaha?
O2 sensor feed back is not used on cranking.
main determinates are Coolant temp sensor and pulser coil position, once running the TPS,CPS and coolant temp take over.
I would test the fuel rail pressure while cranking and spark while cranking.
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