Quote:
Originally Posted by johnflight1
....It threw codes P0300,P0301 and P0305 cel light on ,shut it off restarted,and the shaking stopped cel remained...
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Swap the #1 and #5 coils to known-good cylinders and clear the codes. The next time the mis-fire(s) occur, see if they've moved to those cylinders or remain at 1 and 5.