Cm2250 Air compressor or head gasket ?

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(07-05-2019 )Waterloo Wrote:  Sounds like it is packed with carbon, have you removed the cans to inspect, or popped the valve cover to look at the cam lobes? SCR system, has that been inspected for leaks or cracks? Has the SCR filter been changed out?

I haven't down anything I've only had the truck a few months...