coolant leak

I’ve changed all my Spark Plugs, changed all my Ignition Coils, got a new EGR Valve put on, and still my car is misfiring. I’m not sure what the issue is it just started messing up when I hit 160xxx miles... I think I’m going to just sell this car I’m sick and tired of spending my whole check to...

Hi. My pressure/overflow tank recently started overflowing/ boiling over. I did a pressure test to 30 psi on the system. No leaks. Ive also been getting fuel injector #2 open circuit on my scan tool. There’s no oil in the coolant and no coolant in the oil. No steam in the exhaust either and the...