Diesel knock and assembly error
Diesel knock and assembly error
(OP)
Hey guys,
I now have two cases of severe diesel knock that led to partial destruction of piston, head and block. Both the engines have the injectors removed and assembled again. Both engines have also accumulated quite a high mileage.
One engine is an IDI and another one is a DI. I just want to check with the experts out there on whether it is possible to cause diesel knock if the injectors were not properly assembled.
I now have two cases of severe diesel knock that led to partial destruction of piston, head and block. Both the engines have the injectors removed and assembled again. Both engines have also accumulated quite a high mileage.
One engine is an IDI and another one is a DI. I just want to check with the experts out there on whether it is possible to cause diesel knock if the injectors were not properly assembled.





RE: Diesel knock and assembly error
RE: Diesel knock and assembly error
RE: Diesel knock and assembly error
ISZ
RE: Diesel knock and assembly error
thanks for your reply. the diesel injector assembly error is often overlooked and not many realized that it can easily lead to major engine damage.
Long while ago, a diesel engine guru from a Japanese OEM once told me to avoid taking out diesel injector once it is installed.
I didnt quite get it as I'm a spark ignition engine guy and we can take out injector whenever we like. Now that I have moved my focus from SI to CI, this whole thing started to make sense
RE: Diesel knock and assembly error
What type of injection pump?
What type of injectors?
The first thing to do is use the proper injector tester, and check pressure and pattern. Did you do that?
RE: Diesel knock and assembly error
appreciate if you can clarify the relationship between the injector and the melted piston.
RE: Diesel knock and assembly error
RE: Diesel knock and assembly error
I cant publish the photos because we got them from the testing that we conducted. All that i can say is that the piston and head melted. Bore has scoring.
RE: Diesel knock and assembly error
RE: Diesel knock and assembly error