ISC CM2250 Idle Surge, no active codes, zero accellerator/ throttle response

[Rawze]

(03-31-2024 )dodges15152023 Wrote:  

(03-30-2024 )Rawze Wrote:  and did you do a proper fuel rail leak test?. What is the leak rate in 60-seconds?.
ref: http://rawze.com/forums/showthread.php?t...3#pid75483

"truck has been off for over an hour, pressure when key was cycled off to on after running was 8473 commanded and 8909 measured and current pressure is holding at 8867", and continues to hold this rate/loss pressure.

sounds like its holding at idle pressures.. but test should be done at 30,000 psi not at idle pressure. Many times, the injectors etc. don;t leak unless its at or close to max pressures.