Admittedly, hindi ako kumakalikot sa kotse. I leave that to the mechanics. But it should show up in your service records whether the injectors have been replaced already or not. Kung mataas na ang mileage ng Trooper mo, most likely napalitan na yan, but its best to check to make sure. The injector replacement is free, by the way, since its an engine design defect on Isuzu's part. They claim that they replaced it with defect-free injectors, but we can never be sure... The differential oil was never replaced in all the times that it was serviced by Isuzu, so its must have been either left out or deliberately left unnoticed. I'm not so sure as to the time interval of the replacement, but its all written in the owner's manual.


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We all know how finicky the 4jX1 is. 

