Originally Posted by Kalali
Unless that was a typo the misfire codes are P0301 and P0306 for cyl 1 and 6, respectively. The only common link I can think of is the coil rail since the coils (three of them on the rail) fire 1&6, 2&5, and 3&4 at the same time.
After researching this, I agree with Kalali. Cylinders 1 & 6 fire together. If you have misfires on those two cylinders ONLY
, then the coil rail is absolutely the primary suspect.
Good luck and keep us updated!