When to close the EGR valve on a Cummins ISX?
If the temps reach 525 or better and the inlet temp to the DPF stalls around 800 or is very very slow to reach 1000+ then something is wrong with the injector or DOC. Monitor these parameters during a regen, and you should have these values; EGR valve position – 0% – EGR valve must be closed.
When is something wrong with a Cummins Engine?
If the system doesn’t reach this then something is wrong with engine, not the DOC or injector. If the temps reach 525 or better and the inlet temp to the DPF stalls around 800 or is very very slow to reach 1000+ then something is wrong with the injector or DOC.
What does Hg low mean on a Cummins ISX?
Exhaust gas pressure – 120-150″ Hg – Low could indicate a failing turbo. Intake manifold pressure – 10-14″ Hg – Low could indicate boost or air to air leaks. Percent load – less than 2% (with the fan off) I’ve seen most regens fail with this at 5% or higher.
When does a Cummins Regen fault get logged?
Most regen faults get logged after a failed regen, when the engine and everything else is right up to operating temp and has been there for hours. It is quite common for us to follow the TS and perform a regen and everything is fine because we started with an engine that hasn’t been running for hours and has cooled down.
What’s the regeneration process on a Cummins ISX?
• Press “Force regeneration switch” for at least 2-7 seconds. • If Regeneration is accepted, RPM will rise until regeneration is complete. Regeneration Process Cummins Engine Note: Prior 2009 models had regeneration switch inside the cab in driver controls.
What should the Regen temps be on a Cummins Engine?
Intake manifold pressure – 10-14″ Hg – Low could indicate boost or air to air leaks. Percent load – less than 2% (with the fan off) I’ve seen most regens fail with this at 5% or higher. This is also what is near 0% with a cold engine and 5-7% with a hot engine. Typically a weak metering actuator, the engine heat makes the actuator weak.