2016 ISX misbehaving.

[Chamberpains]

Yup, get your hands dirty. Or put a blind fold on and walk in to every repair facility you can and give them your bank account number.

These engines aren't nearly the uncrossable mountain they appear to be a first glance. They are similar to the first mountain you climbed in your younger days. You never would've got over it if you never even started the journey.