MISFIRE DISCO II 2003 CYLINDER 1 and 8

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fma01709

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Hello All,
I have a 2003 DISCO II 170K and after a rainy day. I start getting Misfire on Cylinder one and eight.
I checked all eight spark cables for sparks, and they all send sparks to spark plugs.
Cylinder one is located on one coil and the the eight is on the second coil, so this tells me that two coils cannot fail at the same time.
I checked the mass flow sensor, disconnected it, and still got the same misfires. Cylinders one and eight.

Any ideas or recommendations? The codes are PO300 and P0301 and P0308
 

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