Nice!

Umm, more guinea pigs please!

 

Yeah before we all use this, I'd have some more guinea pigs.


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:rofl: That's kind of what I told him.....it was his call! I've had good luck with the stuff on Bosch mechanical fuel injection systems, but I guess they use it on the newer European stuff as well....

 

stiction is on the oil side of the injectors so how does a fuel additive cure it ?

As applied to 6.0 L injectors, the term is used to describe the condition when static friction (i.e., stiction), in addition
to normal static inertia, is greater than the force of either injector coil, resulting in a delayed spool valve response
or a stuck spool valve. Stiction can be either a momentary or permanent condition, but is most often momentary.
Because the spool valve is operating in an engine oil environment, stiction is usually temperature related
increased oil viscosity as a result of cold temperature will exacerbate stiction causing conditions, leading to an
increase in stiction severity; decreasing oil viscosity as the engine warms up often leads to a decrease of cessation
of stiction symptoms

 

yep sure is!!

 

^ what he says. I was abt to say sounds totally like stiction issue so odd that something in fuel helps. Maybe wasn't actually stiction but something else?


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WTF? Injectors were just dirty maybe?

I am thinking the same like maybe just an atomization issue ? IDK ?

but that should be always present not just cold so I still IDK LOL

 

Hmmmmmmm.....

 

I'm wondering if he just had dirty nozzles? Maybe carbon? Crud/buildup inside? Whatever it was, it would idle somewhat normal after 10 minutes. (Still didn't idle perfect....a bit rough sounding to me.) If the spray pattern was disturbed from deposits, would a hot engine burn it better than a cold engine, resulting in an improvement as it warmed up?

Forgot to mention, he has 142,350 miles on stock injectors. It's only ever had 15w40 dino oil in it. Still has original oil cooler and egr function, delta is 12-18 degree's just around town. He's in for some expensive maintenance.....getting the wife's okay. I told him he either needs to do the oil cooler and egr delete, or sell it....

 

I wasn't asking what side it was on LOL

I was however asking how a fuel cleaner would fix an oil side issue

in My smart as.s special way Ha

 

If this cured it the problem was most likely carbon buildup on the nozzles and not stiction.

Yes it would run better as the engine warmed up because diesels don't like cold combustion chambers and head aids in complete combustion.

 

New 6.0 Excursion owner here. What is stiction? I don't have idling issues, but my2005 Excursion takes longer to start when it is warmed up compared to when it is cold, between 10-20 seconds. Starts around 5 seconds when cold.

Thanks,
Brando

 

Brando, stiction is when varnish builds up on the injector spool valves causing them to stick. It will cause the engine to idle badly when cold initially and smooth out when it warms up. Eventually it will run badly all the time. This is an oil side of the injector issue.

Your warm start problem is likely also an oil side problem related to an internal high pressure oil leak. You should look into getting this repaired as soon as you can. It will leave you sitting on the side of the road not running eventually. Likely leaking STC fitting on the high pressure oil pump, the standpipe or dummy plug o-rings.