both O2's out at same time?
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both O2's out at same time?
what could cause both of them to go out at the same time? i've got a good tune, so i know its not that rich. i used top end cleaner a few months ago and havent gotten new plugs yet, do you think it could be the crappy plugs causing an incomplete burn to foul the O2's or is there something else that could be doing it?