2009 ISX435 ST Emission Issues

If so why is there a Front Timing Acuator and a Rear Timing Acuator for the injectors? Reread my statment, then go and get a wiring diagram to disprove what I am saying.

2010 and newer only have one camshaft. That one camshaft only runs the intake and exhaust valves. Those injectors are completly electronic.

 

go read what highside said, it pretty much sums it up as far as the metering solenoids. The injectors themselves are mechanical, the fuel flow is electrical.

 

this was the quote I was referring to when I said the injectors were mechanical. I'm not gonna have a p!$$1*% contest with anyone here, heavyd has more experience than I do on these engines and I have been working on diesels since I was 10. but take into account what was being referred to before jumping all over somebody about how it works.

 

So according to you everything I have said is BS. Does the plunger in the injector not boost the pressure within the injector?

You should take some of your own advice from you last statement because right now you are being hypocritical.

 

Ok, for the record, it depends on what generation, or series of ISX you are talking about. The ISX model that we are talking about in this thread is specifically a CM871 series, (EGR engine, with a DPF). That one has 100% mechanical injectors. The latest ISX models, specifically 2010+ tear emission engines, CM2250 and CM2350 do in fact have electronic injectors. These are a different generation of ISX that use high pressure common-rail fuel system. No injector camshaft. Fuel pressure is generated by a high pressure fuel pump and supplied direct to the injectors through high pressure fuel lines. The injectors all have solenoids that are electronically controlled by the ECM to inject fuel at that magic moment. The pressure is high enough and no mechanical injection is needed.

Here are some good videos to help explain how the fuel systems work for CM871 or earlier.
http://www.youtube.com/watch?v=HvvFElrc5ak&feature=channel&list=UL
http://www.youtube.com/watch?v=_WeiDC6S8Lw&feature=relmfu

Here is a Cummins Common Rail system, not ISX, but same theory.
http://www.youtube.com/watch?v=zbOzX_OFDIg

 

Is your truck a former USA truck truck?? If so, can you could probably get the unit number and call USA truck or the former owner and get the mx records associated with this unit. This could probably assist you in the history of it. Just a thought.

KH

 

Thank you KH. Tried that right from the start. USA Truck told me that they would not give the records as they did not sell the truck to us. we got it from a small dealer that got it from USA truck.
Heavyd, thank you for the explanation to the arguing gentlemen. That is exactly the information that I have discovered from this mess. As stated by my brother from the very first thread this truck is a 2009 and holds to the 2007 emissions standards. I would never recommend this motor to anyone and as soon as I can get out of it, I intend to do so!

 

what was the unit # @ usa? I cant do anything with the vin but if you know the actual unit # when it was @ usa I might be able to at least look the history on it and give you a run down on it.

 

thank you Heavyd this post is what i need BigMac99