Quote Originally Posted by jtech_sns View Post
mga sir, pwede po bng mlaman kng sn mganda magpacalibrate kc grabe kumain ng krudo pjero k 4m40 6km/lit, ty
4M40 uses a Bosch / Zexel diesel injection system. I recommend that you bring it to any authorized Bosch Diesel Service Center nearest your location, as these shops are factory trained, and have the necessary test equipment to do a good job.

FYI, we are a Bosch Diesel Center (Central Diesel, Philippines)