02 7.3 Exhaust backpressure shuting down?
 

Truck threw codes for exhaust back pressure sensor malfunction.Pulled the sensor and the tube and there was about 2" of blockage in them.Cleared out by hand with a drill bit.Reassembled and drove it-massive amounts of black smoke-it never smoked like that before.Drove around for a bit and tried to get on it a little-heard a loud pop-now the boost gauge doesn't work.After another 5 minutes it shut down again.Threw a code for exhaust back pressure valve.Do I need to pull the turbo to get to this?What exactly needs to be cleaned?I'm hoping this is finally the problem after all this BS.Thanks.