Troubleshooting a very intermittent miss on an N14 Cummins 

While I commend you sir, on being the first person who shows how to properly set the injectors on an N14 Celect plus. However, injectors are adjusted atop of the power stroke, 45 degrees before top dead center. Other than that you are spot on.

I was viewing watch wes work videos and RU-vid recommended your channel. Yours are the same style so I've subscribed. Look forward to seeing more

Best engine built. 17 in oil field fleet. Know lots of tricks. Know every bolt on 2002 and older cummins.

Honestly I think the N14 select plus is the best engine Cummings ever made !!

Good work bro.

If it helps i had the same issue on a m11 celect plus engine it is as if the engine would shut down dead and start back up intermittently on its own. It had nothing to do with the injectors I later found the 12v power rail inside the ecm was dropping out caused by the Horton fan clutch solenoid it didn’t like being connected to the switch I disconnected that and the fan runs all the time and it’s fixed. It must have been to much current for it

On modern computerized electronic diesel engines, if the injector calibration codes are not entered into the ECM program after replacement, this to will cause issues with the way an engine runs. I learned this the hard way after I had a six-pack done on my DDEC-4 Detroit Series-60. Those codes make a huge difference in the way the engine runs smooth or rough. After running that truck for 12-years, I just recently sold it and all my trucking equipment. Done being an owner-operator after 17-years, back to company driver now in my 39th year driving. No more working on trucks/trailers. Funny how this owner thought he had a six pack done when only a single injector was replaced. Six packs are not cheap costing thousands of dollars in parts/labor.

So did you say that another shop put in injectors? so it should be some kind of warranty left on the other ones I am guessing

Excellent systematic diagnosis. N14’s are great work horses only downside is eatin injectors!

I heard of a problem like this, it turned out to be the injector harness.

What causes N14 to free speed good ,but no power,no smoke,sluggish accelerate,and slow decrease of RPM,like air in system?

Some times injector pass through plug cracks and is intermiten will show continuity untill it gets hot

👍. Piss on the know-it-alls. If they knew as much as they think they do they’d have their own channel with a million subscribers 😂.

Skip the dielectric grease in the plugs man that can actually cause a bad connection between pins

I got a small miss fire every time I switch gears after 4 gear but it only happens as soon as I switch then it goes away after I 3-5 seconds it kinda feels like I’m at a low rpm on a high gear for a few then it rides smooth. Could this be an injector or fuel issue?

Check cam end play

Check emc wires at the battery box . Or it’s a fuel restriction .

Typical that people can't find the war out seals on the end of the injectors that are shorting out and frying out the ECM

Engine shake, change front damper

Get good injectors that aftermarket shit is junk.

Sounds like you are a parts changer .

hello where are you located?

Maybe you should have done a cylinder cut out test before pulling the Trans.

Maybe if your going to work on diesels you should buy a real 3/4 drive racket and and 1 5/16 socket.

The truck is kicking your ass because you don't really know what your doing.

That is not the correct way to calibrate the injectors of an N-14 celect plus, it is calibrated with a dial clock at 0.29 degrees, others come at 0.25 degrees after adjusting them with a torque of pounds / inches at 125, it depends on the description that Bring the engine tag, this is the reason why the injectors do not work correctly, it is due to poor calibration.