N14 issues

[hhow55]

(11-11-2018 )race7820000 Wrote:  My N14 was overhauled 3/16, I bought the truck in 2/18 and maybe have put 40k miles on it this year, according to the receipt the Truck has 230k roughly on overhaul.

I took to cummins cause it was missing. Or I thought it was and doesn't have power.

They "fixed" the miss a little lol but truck is the same. Still has a miss. Just not as severe. The guy that did the injector and dynoed it after said he can feel the miss under a load they just can't pinpoint it. And suggested a computer, etc etc, I really don't want to throw parts at it. It still Doesn't have the power. It will maintain speed pulling a load up a hill. But if your on the flat and your mash it, it just sits there and takes forever to gain speed.

It's a 525hp 13sp 3.58 gear

They Said blow by was 12 inch under load. Which I would think is high.

When the Truck runs there is no smoke whatsoever out of stacks and burns clean.

Is there a way to test the turbo to see if it's causing the blow by part?

I realize that just because it was rebuilt doesn't mean it was done right or something else happened.

I recall having problem's like your's with my old n14.
First I would check turbo, and see if any fins are missing, and also check for excessive side play.

Get some soapy water, and search for leak's on all you boot's to and from the cac. Your low power could be a weak fuel pump. As regard's to the miss, when mine had one it was alway's a bad injector. Try disconnecting the injector connector's one at a time that are on the left side of your motor, and see if that work's.
Are you signed up at quickserve.cummins.com ?