What causes a fuel injector to knock?
Knock Knock Engine knock results from the miss-timing of the combustion process between the injector firing and piston movement, resulting in a knocking sound from the engine. This symptom indicates that more components than just the injector are now involved. The common rail pump could be contributing to the fault.
Can faulty injectors cause knocking?
This is not always a cause of concern. The reason your injectors are knocking is that they are not well lubricated. If you use good fuel, the injectors would stop knocking and clicking. There is an easy way to fix that problem by replacing the injectors with new ones.
How does a 2006 Cummins ISM work while driving?
hello I have a 2006 Cummins ISM (ESN, 35127420 ) This unit while driving surges with a small puff of black smoke, while watching the EGR data in insite, while at crusing speed arouns 1/2 to 3/4 throttle the EGR delta pressure bounces from about .5 to 4.5 inhg and the EGR cooler efficiency changed to NA.
How often does a Cummins engine need to be replaced?
These year and model engines were known to have egr valves replaced frequently due to low power and black smoke at least once a year . Sometimes I saw the same truck back in the same year for a second egr valve . It was a bad design and have since then relocated the egr valve on the newer model year .
Can a Cummins Engine update through the ECM?
If you do the update through the data link triangle connector in the engine harness by the Ecm , the chances of this happening are greatly reduced . Also loading the wiring like you stated with a bulb is good but it doesn’t tell if there are wires crossing inside the harness though .
What’s the minimum fuel pressure for an ISM?
Minimum Fuel Pressure:During Cranking 172 kPa [25 psi]At 1200 rpm 827 kPa [120 psi]At Governed rpm 1034 to 1241 kPa [150 to 180 psi]Engine Minimum Cranking Speed 150 rpmIf fuel pressure is low , we should check inlet restriction to see if it is too high coming into the pump .