I'm a first time diesel owner with many questions. Recently had my '02 2500 in the dealership to replace all rockerarms and one pushrod & lifter. Since I picked it up there is a fairly loud chugging noise from the air box. It sounds almost the same as when I had the bent pushrod (not as loud ). The dealership said it was normal. Is it ????

 

You should hear some sucking, but &quot;chugging&quot;? If you have another dealer around, or a Cummins dealer, ask them. I can hear some serious sucking from mine, but I cut a hole in the cowl for my air filter. ;D<br>No kind of chugging though.<br><br>Chris