Join Date: Apr 2012
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the top o ring is part of the HPO system. a leak there means a leak in the entire system. it will not cause a miss at that specific cylinder.
OP, you have a glow plug circuit code for the same cylinder you have a contribution code for. i have a feeling something happened in that cylinder..possibly. if that cylinder showed low on your power balance, i would run a relative compression test at this point.
also, your loss in top end power is probably a stuck vgt or malfunctioning vgt solenoid (your p0046)
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