Engine carbon cleaning
In early 2017, I was having a lot of power and acceleration issues, and took it to different mechanics and each suggested something different. Finally took it to the Mazda dealership and they said the engine needed to be decarbonized. I didn’t know much about this before this and I just trusted them with it. Cost me close to $1K and was without a car for over a day (got free rental). That mostly fixed my issues.
Fast forward to last few months, I am having the exact same issues, and now with mileage too (240K vs about 175K back in 2017) . But since I only plan to keep this car for another year only , I don’t want to take it to a mechanic again for carbon cleaning (assuming that is still the same issue). I researched the issue and apparently this is a common issue with direct injection engines? And this is Skyactiv technology engine which is supposed to be better, more efficient etc. Don’t think so when I have to do this twice in about 6 years.
I did buy those fuel injector cleaners (Gumout) and have been pouring one bottle when I am low on gas and just before I fill up.
Does anyone know if I can pour in 2 or 3 bottles of this at once? And instead of putting it through the gas line, can I pour it directly into the engine just like you change oil?
And other than taking it to a mechanic for decarbonizing, does anyone have any other suggestions for me to look into?