DD15 broken fuel pumps

16 TS-1 states that injector replacement is no longer required or permitted for hpfp failure. If it's customer pay we still highly recommend it but under warranty we can't replace them. I'm not sure what their reasoning is, if there is metal in the rail there is metal in the injectors. I can't imagine that injectors are going to last very long.

Check rail pressure bleed off with the fuel injector lines capped off. If it fails there is internal leakage in the pump and it needs replaced.

 

I tried a jug of Stanadyne Lubrication this week. Large enough jug to do three tanks. Don't know if it's a coincidence but I never noticed my truck doing a regen all week. Maybe I missed it. Normally at the current temps I would have seen two or three for the week. But I didn't notice any.
I use a Scangauge to monitor the DPF, DOC temps and NOx.

 

Hey @mhyn , I wonder if this guys chart has anything t do with pump failures. Shows U.S. Fuel Lubricity standards are worse than European standards. 520 vs 460. Detroit recommends less than 460. We use Co-op fuel, it's rated at <460, plus Stanadyne can bring it down another 160 points. Looks like there are better products if Lubricity is what we're after.
And certainly a lot of worse ones.

 

Looks like Optilube summer blend has higher Lubricity and lower cost, but I can't buy it anywhere around Saskatchewan.
Stanadyne I can buy in Saskatoon and yes, my truck seems to like it too. Seems quieter and less regens too.