Cat C15 BXS misfire and rough running

Bad advise !

 

Or cracked head. Is it alot of bubbles ? Isolate the air comp and see if still bubbles.

 

Could be. They won't cause any codes to pop up. Unless you keep running it then you will see all kinda codes ! LOL. check the easy stuff first. Isolate the air comp and see if bubbles stop. Turn off or plug heater hoses to see if bubbles stop. When you start it up after sitting over night does it smoke white smoke till warm ?

 

I

if it’s blowing bubbles you need to isolate the air compressor coolant and any air operated heater taps. Once they’re isolated if you still have bubbles then it’s down to
-cracked head
-bypassing Head gasket
-bottom sleeve seal
-cracked liner

 

If you need a in frame, hoping you don't, make sure you cut all 6 liner protrusion. If cat was to do in frame that is the only way they will warranty work.