New injection pump, now hearing low rpm knock.

[MTKirk]

That return line looks well, different then the fabric covered hose I'm use to seeing.

It's Gates barricade hose. It holds up well with the bio-diesel and hot waste vegetable oil I run, and it is available right off the roll at my neighborhood O'reilly. It costs a little more than SAE 30R7 (which turns to goo in a few months on my rigs) and is much cheaper than SAE 30R9. I've been running for about two years, so far so good.

 

[MTKirk]

Don't you love find simple fixes?

Usually happens to me after I spend a lot on parts then find that I didn't really need them.

Yeah, I am not disappointed at all about getting new injectors. All but two of them were dripping wet when I pulled them, one had bubbles coming out of it, HUH??? I cannot believe how well my truck runs now, the power that has been restored is incredible. It's going to cut my plow time way down this winter. Can't wait for a big snow to see what this thing can do; AND to start paying for all these dang parts!

 

[Clb]

The search function rocks again!
Nice job.