I have changed the motor/transmission mounts, radiator cap, reservoirover-flow tank and flushed the cooling system. Also an oil change in the past month. The check engine light came on about 2 weeks ago so I used the OBDII scanner on my car. These DTC's came on the scanner along with 2 other codes, P0300 and P1399. I need some advice for these problems. Any would be appreciated. If I had any money, I would just take it to the dealer or a shop and have them deal with this but I don't. My car has 198000 miles. My car has an automatic transmission.
If you have confirmed spark, air and fuel, for the P0301-P0306 codes I would check compression. Also check the attached link. P1399 Honda Random Cylinder Misfire Detected
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DTC P0301 Cylinder 1 Misfire Detected
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DTC P0302 Cylinder 2 Misfire Detected
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DTC P0303 Cylinder 3 Misfire Detected
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DTC P0304 Cylinder 4 Misfire Detected
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DTC P0305 Cylinder 5 Misfire Detected
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DTC P0306 Cylinder 6 Misfire Detected
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DTC P0307 Cylinder 7 Misfire Detected
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DTC P0308 Cylinder 8 Misfire Detected
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