Have any of you came across this problem with the C6.4 engines?, also came across on the C4.4 and C6.6 engines on D4k tractors and 930H Wheel Loaders
The engine timing is correct, the speed/timing sensors read perfect, no error codes, filters are new, fuel supply good, for those equipment where i can read the fuel supply pressure reads around 17~19 psi while cranking, yet the Fuel Rail Pressure reads 0 PSI
On the ET i can check the pump solenoid and it reads OK, i can hear it activate and deactivate during this test, injector tests also proves injectors are working fine.
What baffles me the most was the reason i had to troubleshoot this excavator was because it took a while to start at first, and when start the operator said it shuts down intermittently, now one of the timing sensor at the flywheel wasn't reading and after checking the harness was at fault, after repairing it the engine started fine after one turnover.
One day later the operator called and said it wasn't starting at all. After checking again the timing sensor on the fuel rail pump was not reading. After disassembling around the pump to get to the sensor the harness and connector was also broken, I also noticed the sensor seemed a bit loose and that it too was broken! Now to remove an entire pump to change this sensor is no easy feat. I did find a short-cut to remove that broken sensor and replace a new one but i shortened the bolt and shaved half it's head off, also modified my wrench to work in that fine space and it worked like a charm.
Everything on the ET was top-notch, all the sensors reading, no errors, but while cranking 0 fuel rail pressure = No Start. Long story short I was told to change the injector pump
After changing the pump the engine started fine, fuel pressure etc. read great.
But it's strange, i mean do these pumps just fail without any notice? One day the engine started fine, next day it's dead.
The engine timing is correct, the speed/timing sensors read perfect, no error codes, filters are new, fuel supply good, for those equipment where i can read the fuel supply pressure reads around 17~19 psi while cranking, yet the Fuel Rail Pressure reads 0 PSI
On the ET i can check the pump solenoid and it reads OK, i can hear it activate and deactivate during this test, injector tests also proves injectors are working fine.
What baffles me the most was the reason i had to troubleshoot this excavator was because it took a while to start at first, and when start the operator said it shuts down intermittently, now one of the timing sensor at the flywheel wasn't reading and after checking the harness was at fault, after repairing it the engine started fine after one turnover.
One day later the operator called and said it wasn't starting at all. After checking again the timing sensor on the fuel rail pump was not reading. After disassembling around the pump to get to the sensor the harness and connector was also broken, I also noticed the sensor seemed a bit loose and that it too was broken! Now to remove an entire pump to change this sensor is no easy feat. I did find a short-cut to remove that broken sensor and replace a new one but i shortened the bolt and shaved half it's head off, also modified my wrench to work in that fine space and it worked like a charm.
Everything on the ET was top-notch, all the sensors reading, no errors, but while cranking 0 fuel rail pressure = No Start. Long story short I was told to change the injector pump
After changing the pump the engine started fine, fuel pressure etc. read great.
But it's strange, i mean do these pumps just fail without any notice? One day the engine started fine, next day it's dead.
320DL - No Start Condition
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