Under the hood, that fuel delivery system next to the engine. I can hear the gas flowing through and right when the hesitation hits, the fuel going through also gets quieter. You can hear it.
you dont have wires. and you are not going to hear the fuel system. what u may hear if you have sonar hearing is the injectors turning on and off. you have a a bad miss fire. could be a injector plug or coil. i doubt its the fuel pump.
i had a fuel line leaking once a while back and it would cause hesitation in throttle response…but that’s not too likely in a newer car like yours.
and i dont know what the vacuum line setup is like in your car, but a vacuum leak would cause those symptoms too i would imagine…since i have vacuum leaks, and have similar/same symptoms…
do you have a vacuum/boost gage? i’m sure somebody on here has an extra one…and it takes 2 seconds to just tap into a vacuum line to get a reading on it…just look online what the vacuum is supposed to be at at idle, and then observe what you have. if it’s low, there’s your first step to fixing the problem…and even if you dont have the time or capability of fixing it yourself, you at least saved yourself the money you’d spend at a dealer on diagnosis. just go there and tell them you have a vacuum leak, find it and fix it. otherwise they’ll run 2 or 3 hours worth of tests just to say “yup it’s a vacuum leak…that’ll be $250 for diagnosis…”
so you have a car with a warranty and are getting bent out of shape? Not trying to be rude or anything, but why frustrate yourself and everyone here when the dealership has the exact means necessary to diagnose this problem in an instant? If it is covered they have to fix it , plain and simple.
And Joe sounds about right, you have a wicked misfire somewhere. Don’t rule out the oiled up MAF though.
why scan it. its going to say cylinder misfire. you seriously should stop worrying and just take it over to mazda coils are covered plugs are cheap. just dont let them talk you into the unneeded tune up shit
