Hi I need some technical info for my Blue bird bus 2004 with ISC cummins I have the possibility to have a diagnostic software I look for the diagnostic connector but I do not see it in the cabin of the Bus Crank no start no smoke the feed pump work filter ok I have fuel to my Fuel pump If u can show me troobleshooting procedure pressure spec etc Will be appreciated Thanks
The diagnostic connector should be by the ecm on the engine. Also make sure that the ecm is getting power. I'm not sure which ecm you have but if it has a plug with 2-4 wires roughly about 10 gauge. That is the power source to the ecm.