99 rebuilt ISM misfire, black smoke, popping video inside

I went the route of an aftermarket rebuild on a 1995 12.7 L Detroit in 2009. First trip out it same symptoms: misfire, smoke, & smell of diesel. It turned out to be an injector tip cracked-or wasn't installed correctly when rebuilt. I gathered since that aftermarket sleeve kits are one thing, but always use OEM rebuilt injectors.

 

Do a cylinder cutout the old fashioned way: drive it around enough to warm up. Then check the temperature of each exhaust port in the manifold with a laser temperature gun. Or really do it the old fashioned way and touch each port with a wet towel.

 

Take it back to the shop that did the rebuild, or did you do it yourself?

 

Was it running like that before the overhaul? We rebuilt an ISM and it had low power and some smoke. It dropped 3 injectors in a week or so. If you have multiple injector problems would cutting out one tell the story? Maybe unplug one. If it does not make a difference leave it up plugged. Go on like that and find which ones are doing some work.

 

That is good advise but I have seen some electronic injectors put out enough fuel to generate heat. Maybe they spray out of time? Temperature was good but injector was bad. Yes this is odd. Cost me a lot of money.