2014 isx vibration

[Rawze]

(03-05-2016 )race7820000 Wrote:  the overhead has never been done, has 430000 miles on it, but cummins said the overhead wouldn't cause the vibration/shaking problems.

It sounds like your dealing with the typical under-trained idiot squad (not that I am less of an idiot myself lol).

I have seen ISX vibrate for all the reasons that they looked for. dirveline, clutch, damper, etc.

But they will also vibrate like that if ...

* there is a spun bearing in the head and it is now wallowed out.

* Bad Overhead adjustment. - An overhead need to be done on ISX every 200k miles or so, not 400k+, like the book says. That is a good way to loose your cam prematurely ( more info on overhead cams )


* bad fuel-to-air ratio (on a CM2350 that would be more than 32-33 lbs boost in most cases).

* bad ecm programming.

* injector problems.

* static timing problems.

* excess exhaust back-pressure from a clogged emissions system.

* an over-spooling turbo.

* A bent rod or wrist pin problem

* engine cavitation due to charge flow restrictions.

* worn out main or rod bearings, or overhead cam bearings.

-- that is just what comes to mind off the top of my head.