New/Remanufactured injectors vs Ultra-low-sulfur diesel (ULSD)

Fredrickson

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Just wondering..

Does ULSD affect new and reman'd injectors as much as the original injectors that came with our engines, which were designed for a different fuel formulation (and level of lubricity)?

O-rings and other parts have gotten better/upgraded materials.. so I am wondering if injectors now have components made with parts that can handle today's fuels better..

Or are the injectors that fit 7.3 and 6.9's still made with the same 1980/90's materials, specs, etc.. that will still see higher wear due to the lack of the lubrication?
 

Selahdoor

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Good question. Watching for the answer.
 

SLC97SR5

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I'm going to guess and say, yes. ULSD is just as destructive to NOS, new or rebuilt injectors as the OEM units.

I just don't see the demand for suppliers to re-tool, re-engineer or spec new materials for these old dogs.

IMO our best bet is to keep the fuel filter fresh and drained of water, keep the timing in spec and use a proven lubricity additive.
 

IDIBRONCO

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I'm going to guess and say, yes. ULSD is just as destructive to NOS, new or rebuilt injectors as the OEM units.

I just don't see the demand for suppliers to re-tool, re-engineer or spec new materials for these old dogs.

IMO our best bet is to keep the fuel filter fresh and drained of water, keep the timing in spec and use a proven lubricity additive.
I'll second this one entirely. I see it the same way.
 

Thewespaul

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The only affect it has on injectors is increased wear with the lack of lubricity, modern diesel is much more harsh on the injection pump than the injectors which are fairly simple devices. The injection pump relies on the fuel for the hydraulic advance, lubrication of bearings, cooling and of course fuel injection. I’ve taken steps to reengineer several components on my injection pumps to modernize them for the poor fuel we are stuck with these days, you can read all about it here: https://classicdieseldesigns.com/collections/injection-pumps-injectors


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Vern

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it will affect new and old the same. Perhaps a slightly retarded injection timing as a result of lowered fuel viscosity would have an impact in addition to the lube loss on a older pump. Some turn IP pressure regulator in.
 

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