ISL9 330 CM2350

[DVT873]

If this is the same as the the ISB did you replace the tubes between the injectors and the head? On the ISB they have edge filters inside. On ISB QuickServe says to "inspect". Other Cummins publications and people smarter than me say to always replace. I lost 2 injectors on #2 before learning this. Cut the tubes open and there was debri inside from what had to have been a prior pump failure. After replacing tubes no more injector failures. On a never ending upward learning curve. This site is a huge help to me. I'm new to Cummins. The EGR tuneup has straightened out several ISB after treatment issues. Everyone had been other places for DPF/DOC issues. Everyone had plugged EGRDP sensor ports. Several had face plugged DOC's. Have some video of a Ford 650 w ISB. After dropping the cans it smoked black like a freight train. Cleaned the ports, replaced the EGR valve and sensors. Back down the road, just a light puff on takeoff. No sensor codes on arrival. Hard to believe that a blocked 3/16 port can cause so much trouble. My thanks to Rawze and the site.