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mikkhh

(08-08-2025 )DVT873 Wrote: So it went to hell after you put in the injector codes? The Internationals I normally work with don't use injector codes, so I know little about this. BUT if it won't run on the correct codes, maybe somebody HAS messed with the programming. Any chance of putting the origional codes back in and seeing what happens?

Whose injectors? Quality is all over the board on injectors in general. I wouldn't trust anything except Cummins or maybe Bosch.

Truck manufacturer or cummins remans I would trust. But some dealers in my are ask core charge for even new parts.

Have had bad experiences with Bosch reman diesel injectors. One (from set of six) piezoelectric injector electrical side failed 1.5 years after installation. Warranty was only 1 years. So money down the drain. Bought another bosch reman injector to replace it (was in stock at parts store) - but sadly it fas faulty direct from the store, again electrical side defect. After that bought used from junk yard for 1/3rd of reman injector cost, since I needed something to drive with along the warranty time. It took 6 months for them to finally aknowledge it was faulty and issue me a refund.

wrench buster

Thanks much for your quick reply. I took your advice and pulled the OLD injector trim codes (from Insite) and input them back into the ECM, and BINGO I could tell just by the way the engine started that was it. I didn't think of doing that early on because the ECM ACCEPTED the New trim codes from the aftermarket injectors And they all passed the pressure and return flow tests. The strange part is EVEN the 2 Cummins remans I had installed on #1 and 2 Cyls. were screwed up and not firing off correctly. To sum it up the engine was misfiring on ALL cyls at all rpm's. When I did the Cyl cancel test on Insite there was only min (150-200 rpm loss on each cyl) and not even the #1 & 2 cyls with Cummins injectors were hitting strong (I figured they would). I don't know if it was 1 or all of the aftermarket injectors that are still installed are the problem. I could enter the trim codes on each cyl (one at a time) and then start the engine to find out. I am just going tom let that ride for now and see what happens. The motor runs strong why fix it? Even though the Cummins remans were almost double the price as internet injectors now I can see why.

Thanks so much

Rawze

After-garbage injectors should NEVER be used in a commercial application. Its called jumping over a dollar to save a dime.

Here are my thoughts on why I would never use them...
info: https://rawze.com/forums/showthread.php?...67#pid4367

mikkhh

Properly working injectors are the main thing that are holding modern engines together. The only way they could make materials weaker and make engines more fuel efficient is that they replace iron with computer control and since modern diesels have pulse injection - fuel is injected at stages compared to just one on oldschool diesels. Properly working injectors ensure that engine bearings are not loaded more than their design capabilirt, that the combustion is spread out and there is no sharp peak premature combustion that hammers away the bearings and liners...

Injectors have correction codes from factory so the engine ecu knows how they are working, since commonrail diesel injection is very precise and the injection opening timigs are in uS - microseconds.

If somebody wants to argue how good their cheap reman or knock off are then after driving some time pull injectors. Take a boroscope and send us pictures from top of pistons and cylinder walls.