Cummins ISX CM871 Technical discussion

What is DOC ? I have cleaned my filter 5k miles ago and changed 7th injector. I will try to update my ECM software.

 

DOC is diesel oxidation catalyst. Its right next to the DPF filter. Loosing that much coolant, surely you have checked the EGR cooler right?

 

Did you reset your injector? That will cause smoke if it's overfueling.

 

Yes ,egr cooler is dry. I have benn in two different places and they said there is no problem with it. But i do not think they reset 7th injector.

Thank you for helping me out

 

Any one have a part number for a 2008 cm781 delta P sensor???

 

4921728 would be the part number for it.

 

Which is better,,,,, a 5inch hole or 40 3/8th ? Going to open this baby up a little.. And any recommendations on drill bit type ..thanks

 

A 6 inch hole but u better have the truck "fixed" befire attemping that or your just asking for problems

 

Hello,
Okay, searched the thread for an error related to "rifle oil pressure". Having found none, I'll ask. What is it? I had a shop put on an external bypass filter on a Cummins ISX. The idea being keep oil cleaner and longer. So, 200 miles out, unloaded, no issues. 100 miles after loading (about a 35000 lb load), I get an alarm and error code indicating low rifle oil pressure. Limp into shop (I assume that the error derated the engine). This is all second hand from my driver. Anyway, shop bypasses the bypass (basically disconnect it), all is well with oil pressure and he is on his way. What would be the "correct" connection points for such a filter? This one takes oil from a port near spin on filter and returns it near port around dipstick. Now driver says we have some intermittent power (loss of power issue) - but he has made it from roughly Indianapolis to Sacramento - so can't be that bad.

 

Re oil pressure loss. I think this has to do with the installation. The Bypass lines are installed backwards.