Isx15 2250 engine brake issue

[Samvelm83]

(05-23-2026 )Rawze Wrote:  

(05-23-2026 )Samvelm83 Wrote:  ...
Thanks for your feedback.

I thought the same way, replaced solenoids but didn't fix the problem.

Do injector leak tests on it when cold, and when hot. It could be leaky injector causing cylinders to partially fire when hot...

info: https://rawze.com/forums/showthread.php?...3#pid75483

Can it be from the jake brake check valve or the spring ?