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November 5, 2021 at 2:29 am
#992869
Fuel filter may be clogged/dirty. But might also be a vacuum leak. How are you certain it is misfiring 5-15seconds each time? An engine that sounds like its bogging, doesn’t necessarily mean misfiring. It could be a result of running lean from intaking more air than the computer compensates for, resulting in a lean running engine.