injector # 6 went out and took the piston with it. What causes for injector failure?

[RMalone]

I wonder if some of the firearm bore scopes would be usefull for getting a look at the piston/cylinder walls?? The ones I have seen have a ridgid tube on the probe end, so they wouldn't work too well on cylinders 5 and especially 6 (cant get your face over the eyepiece).



The idea of a filter between cp3 and injectors seems like a good one. It sure would eliminate DC's excuse of "poor fuel" for garabage injectors failing.



I find it kind of funny that we were given an injector that only runs on ultra clean fuel, when the manufacture knows full well that North American diesel fuel isn't clean/dry enough to keep them working reliably. To make matters worse the stock filtration system is insufficient to account for the difference between injector needs and fuel quality. Add to that the fact that Bosch wont release the parts to reman wasted injectors. Sounds like a shafting to me.

 

[Matt400]

Back to the filtration subject and debris causing failure: Better filtration will help up to a point, but normal wear metals/debris from the CP3 can cause injector sticking as discussed in another long thread awhile back. There's no filtration between the CP3 and the injectors. In addition to using good filtration it would behoove everyone to use a good additive to help protect the CP3 and reduce the risk of wear metals sloughing off and messing with injector pintles.

Good point Vaughn, reminds me of that Bosch Lubricity pdf report page 18.

 

[betterthanstock]

Back to the filtration subject and debris causing failure: Better filtration will help up to a point, but normal wear metals/debris from the CP3 can cause injector sticking as discussed in another long thread awhile back. There's no filtration between the CP3 and the injectors. In addition to using good filtration it would behoove everyone to use a good additive to help protect the CP3 and reduce the risk of wear metals sloughing off and messing with injector pintles.



It would be nice if someone could come up with a filter body & media to add between the CP3 & injectors that could withstand 26k psi without bursting.



Vaughn

Vaughn, almost a year ago, I asked this question

https://www.turbodieselregister.com/forums/showthread.php?t=153569&highlight=edge+filters

No one understood, or cared to comment.

These are the 6 tubes that connect to the injector bodies, and they have a steel plug with a gap around it of only a few microns.

They are labeled as the last line of defense for the injectors, and they collect particles, and slowly break them down into smaller particles as the injection pulses jam them thru that small gap.

I have seen some advertisers on here, who also modify the CP3, offer to open those things up. Basically, that would remove the filtering effect, but it would also allow more flow to the injector, and also the risk of even worse consequences once an injector starts leaking. Right now they limit the maximum flow, so removing them would allow a leaky injector to leak even more.

 

[Vaughn MacKenzie]

I would say modify them at your own risk, mainly for the two reasons you mention- last line of protection against debris, and allowing the fuel to rush in faster when an injector sticks.



I am guessing these things only do so much to break down debris, I think they're mainly meant for dirt/silica type particles and probably wouldn't do much to break down metallic fragments.



Vaughn