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i see, thank you for your insight. currently im just waiting for the check engine light to come back

91 always since new.

Would you think possible carbon build up on intake valve would cause this as well?

yeah.. well i might take off my intake manifold to see how much build up there is

well honestly the rough idle u can feel easily, but i feel they dont want look into it further unless the code comes back again, after all they did update the pcm software without even telling me

is ur car still under warranty? if not i might be able to offer you some suggestions to try

unfortunately it is how things are now, flat rate is ruining things for everyone, a tech needs time to diag but sadly warranty time just does not pay enough, spending hours to find a problem only to find it was the coil that caused the problem and only getting paid .5 hour to replace.

oh wow interesting, i thought mazda only used 5w30 for the turbo engines to prevent fuel dilution and such, i guess it depends on climate and location too

mine scan tool used to read 200+ but mazda updated the pcm to the newest ver, that must of change all the datapoint so it no longer works. I will wait till my day off next week and go into the dealership for them to take a look at it again. The vibration can easily be felt, im surprise the shop...

oh? the 2.5L Turbo calls for 5w30 not 0w20 like the regular cx5

Because i had access to a scan tool that could read misfire count, i was able to see when it was misfiring, for mine when driving its 0 misfire count, but right when u start idling the count would just climb up. for my cel it would only illuminate if im idling, and currently it is not severe...

oh yea i was actually reading your post prior to making this one, i certainly hope its not an engine issue, but this stupid dealership is so lazy, they only updated the pcm software and did not even look in details, so pretty much i either have to pull the plugs myself or wait for cel to turn...

Update: Took the car in to mazda dealership today, after dropping the car off for 2 hours got a call back. -Advisor told me they found misfire on cyl3, and no they can not reproduce it. -Told me to monitor the situation -Recommend carbon cleaning service which i denied I told the advisor...

This is a 2019 Cx-5, the misfire is only there when idling, while driving no misfire count. Do u work for an mazda dealership? if u dont mind me asking

i apologize for late response, here it is.