Isx dieseling

[Rawze]

(06-13-2023 )Mal4shtf Wrote:  Had the same issue on an 871 in the shop. Sent all six injectors to be bench tested. Cylinder2 Injector was continuing to leak down after shut off.

I have seen leaky injectors do this on rare occasion, but not because the injector itself was leaky. If an injector is bad enough, then it can cause combustion pressure to feedback into the fuel system, causing the metering actuators to stay open longer that they should.

Your post also implies that you did not know how to check for this. It seems these days that too many people have forgotten how to check injectors before removing them.

Checking for leaky injectors on a CM570, CM870, CM871 does not require them to be removed from the head. See my post above... I included a link to how to do it.