Today I have 1139,1144,1142,1145,1143 in that order. Info sent to Cummins Customer Care regarding this nightmare.
Cummins ISX15 never ending check engine lights
Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by javelinjeff, Apr 30, 2019.
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All injector mechanical not responding codes except for cylinder #2.
When you said injectors were replaced, were genuine cummins or aftermarket ones installed?javelinjeff Thanks this. -
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I think you need to find another shop that is more detail focused and can follow testing and procedures to isolate this issue. What we do know is that most likely your issue is affecting all injectors since it has logged 5 of the 6 faults. Highly unlikely that 5 of the six injectors are having a failure of the part themselves.
The questions I have........
Was the injector reset performed in Insite after the new ones were installed? Were they replaced in attempt to correct the faults at hand?
What Is the fuel rail decay rate? The high side should be tight with no leaks. (These leaks may be internal and not external) When running the leakage test. Should hold 30k psi with no drop after key off. It might fluctuate slightly, but not drop.
Has the injector drain line restriction been measured? This would make a common link to all 6. I would advise getting a gauge installed and monitoring this while driving loaded.
Why will the IPT test not finish? Does Insite give a warning pop up message error or does one of the faults come active during the test? Will Initiating a stationary regen get the faults to come up or does it need to be loaded?
Think back to the origin of this issue. My guess is maybe something In the repair process may have caused this, cant be sure. The details In the past may contain clues to help find this nightmare.
Again, good luckjavelinjeff Thanks this. -
I think you are still seeing issues of the HP fuel pump failure. The debris are still causing problems with injectors. Whole system needs flushed and cleaned from tank to return hose back to tank. Probably need new HP fuel pump, rail, and injectors again. Until you get every debris out you will replace parts indefinitely. Just my opinion.
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Newto Trucking Thanks this.
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Newto Trucking Thanks this.
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Problem solved, Kenworth installed a defective fuel pump. Shop in Hesperia CA didn't follow correct troubleshooting procedures. Cummins fixed it no charge
HighCountry and Goodysnap Thank this. -
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