r/ecoboost

Replacing the engine block on my Mustang with the fortified version because my head gasket blew 3 months after having a mechanic change it for $3k in December, when removing the head gasket I found this little knick in between 3 and 4. Do you guys think that was there when he replaced it a few months ago and he just ignored it? My fingernail grabs in the spot it’s pretty deep. Everyone keeps telling me just sell it and get a new car but what do they know!!

10 years and still looking as good as the day I got it. Manual ford performance tune and performance pack.

Updated as I failed in my last post 🤣

But: was running aFe and made the switch to thermal. I think it sounds amazing but most of all is it’s legitimately 99% drone free. If windows are up you don’t hear it. And I say 99% because I have the CVF downpipe and secondary cat has been removed.

So I changed the plugs

And I swapped the coil pack to a different location and still got the same code in number 3

Not sure next step to narrow down what's wrong