06-28-2020,
Just wanted to stop by and say thanks to all for their contributions.
Had an Annual Inspection coming down to the wire, tech failed(as he should have) for a pretty big air leak. He spent 90 minutes looking for it, and finally found it at the air QD for the doser purge valve (lucky day). I didn't know what it was so spent an hour searching and finally found a service bulletin that explained what it was. Delete to the rescue! Capped the line. The truck has NEVER held air like this EVER!
Hope all are healthy.
PS: This is on a 2250. The purge valve is behind the ECM and it's harness and about 25 other air lines on a '12 cascadia.
Had an Annual Inspection coming down to the wire, tech failed(as he should have) for a pretty big air leak. He spent 90 minutes looking for it, and finally found it at the air QD for the doser purge valve (lucky day). I didn't know what it was so spent an hour searching and finally found a service bulletin that explained what it was. Delete to the rescue! Capped the line. The truck has NEVER held air like this EVER!
Hope all are healthy.
PS: This is on a 2250. The purge valve is behind the ECM and it's harness and about 25 other air lines on a '12 cascadia.