The question should be "magkano ba magpa service ng injectors". Think about this......
1) Injectors and nozzles wear out. This is why spare parts are available.
2) Some nozzles can be re-used, and some just have to go to the trash can.
3) Nozzles coming from poorly maintained engines with very high hours/mileage cannot be put back to service.
Normally, reputable diesel workshops will help you, and they will only replace parts that are found to be unserviceable.
Cleaning can never fix a worn out part.





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