Quote Originally Posted by Patrol Pilot View Post
Thanks mudnut! I've just read that article and found something you mentioned to ring true with my experience at idle after cruising down the highway:

"The constant knock of the diesel at idle contributes to the problem."

After purchasing my RD28 I had taken it to a mechanic for a general service and mentioned my observation but he couldn't diagnose what it was. Is the knocking an indication of something abnormal that I should look out for? I do have a fuel pump leak too. Cheers
Sorry Airman (pilot) I don't own an oil burner, but start a dedicated thread with a video and an RD28 Guru might be able to tell you something.