Yep, I think a retrofit on an N-14 would cost some serious coin to be done right. Not saying it cant be done.No---------But the first N14's were mechanical in 1992 and early 93 from then on N14's were total electronic. The first mechanical N14's had a fuel system called STC-Step Time Control.
But those engines used the mechanical PT injection pump with oil pressure advance/retard injectors. The early mechanical N14 is a very good engine and can be boosted to 550 plus HP.
Stock ratings were 370 to 435 HP and those engines are not easily found these days. But they can be had also.
Truck Shop
Ok this has been sitting awhile... Have you checked the ECM feeds at the batteries for corrosion? have you checked the ECM fuses? Truck make and year would be really helpful here. If it ran when parked I think its something stupid simple. Seen several "no starts" over a corroded fuse holder. That one should have 2 hot feeds from the batteries with a fuse in the positive leads, those will be 10 ga. wires. follow them to the ECM looking for the fuses. Frieghtliner usually hid them behind the battery box, Kenworth liked to hide them on top of the transmission or in the battery box. Don't forget to clean the grounds too. Also tug the leads at the battery ends, they can corrode away there too.it used to be my daily driver, I retired it but would occasionally start it, last time it ran it started missing but cleaned up with some throttle, I assumed it was fuel going bad.(fuel was bad) eventually I pulled injectors and had a friend of mine rework them (he has an injection service shop) still wont run. so finally I decided to send computer off for testing but the wiring into computer wont unplug (its like the terminals are bonded to each other) so basically now it needs a computer and two harnesses and possibly even a set of injectors. all for something I would just like to hear run again. ps I have a pt pump and a set of injectors from a bc3 400.
I may have been thinking Cat with the 12-10 gauge wire, same idea. One quick test I used on an M-11 was to connect 12 volts to the shutdown solenoid with a gator clip, it fired right up. That's when I found the bad fuse holder in the ECM feed.I will agree with part of that RZ but the N14 ECM's I have worked on mainly have 14 gauge wire in and out. Before any thing is done check with a test light for power at the ECM. I ran though testing one
of these about a year ago. I will try to find the numbered pins on the ECM that should have power with key on. But I feel the culprit is the cam/crank position sensor behind and above the oil pump.
Those are notorious for going bad at the drop of a hat, for no reason.
Truck Shop
I have to laugh that's the same brand and model I worked on a year ago and that harness was installed in last week only difference it was a early 95.1996 intertrashional 9300
Look for inline fuses in the battery box. That was the Navistar way. They should be in good holders with a tight fitting cover.1996 intertrashional 9300