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Originally Posted by BYprodriver
Just for fun scanned it again & found CEL was for code P0300 & P0301 now not P0507 anymore. So now cyl.#1 is misfiring & no smoke. Crossed plugs & coils with cyl.#3 with no change & coils show .4 OHMs also 12volts at coil connectors.
So what's next??
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Try swapping the injectors because running too lean/rich will cause misfires. Also, check wiring of the O2 sensor (front of TWC)for Bank 1 because a grounded power lead to the O2 sensor can cause a too rich/lean signal.
Regards,
paul...