Fuel Pump of Death - ISX. What to do and when to stop worrying?

[Rawze]

(01-29-2021 )Hermjeji Wrote:  So, the yard I park my truck at has a few ISX's. Here are my questions:

What year engines is the fuel pump of death with the ceramic plungers on?

2012-2015 CM2250 and CM2350 looks like they al have the same fuel pump. The 2017 CM2350 has an extra tag ontop of the same fuel pump. The X15's look to have an updated style of fuel pump.

I've got a 2015 and 2017 (the other last cummins I have is dead (2013 ISX600) as posted elsewhere due to this fuel pump). What are the maintenance procedures/recommendations on this.

2015 - 200,000kms 11,000 hrs
2017 - 350,000kms 10,000 hrs

There is no "year to stop worrying". They ALL FAIL! .... the only difference in the older pumps with the ceramic plungers and the very newest pumps is that the older pumps failed more violently. - ALL OF THE pumps for a common rail ISX engine fail and do severe damage when they do so. All of them destroy the entire engine quickly when they go out. There is no "cut-off" date or design change so far that has helped by very much at all.

Like Waterloo mentioned. Replace the tappets, plungers, and barrels (the guts of the fuel pump) every 400k miles and it mostly prevents this issue.


ONLY the older pre-2010 designed (twin cam ISX) CM871, CM870, CM570 engines that had no common rail design did not have this problem.