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  1. Join Date
    Nov 2005
    Posts
    8
    #1
    sino at saan nyo ma-recommend mag pa-timing at calibrate ng Isuzu MU with a 4JB1 engine? yun sana bihasa at sanay at may experience sa ganitong makina. i also have a problem with the injection pump boost compensator (yun diaphragm sa itaas ng injection pump) as per the last calibration center i went, stuck-up na daw ang linkage nitong boost compensator lever kaya what he did was recta na lang daw. so parang in effect, lagi ata malakas ang fuel delivery ko while ang purpose nitong boost compensator is to richen or give more delivery only during acceleration and lean while normal slow driving. kaya siguro matakaw sa krudo itong MU ko. what i do for the meantime is adjust the #8 screw for fuel delivery para lessen or increase fuel delivery as needed.

    also, anyone out there has an Isuzu MU? i think my engine vacuum and/or pressure hoses are all mixed up. If meron diyan na AS IN original and stock pa ang mga hoses na ito, i'd like to come over and see your MU and copy where these hoses should lead or connect to.

    also, saan surplusan kaya meron LSD differential for the MU?

    saka i'm also looking for a TPS for this engine too. TPS means throttle positioning sensor and this is the small round thing secured by two screws with a 3 conductor wire. its mounted on top of fuel injection pump. this TPS is one of the causes why my automatic transmission doesnt shift right. most of when during acceleration (matagal kumambyo or minsan mabilis naman.

    thanks in advance guys!

  2. Join Date
    Feb 2006
    Posts
    469
    #2
    i any calibration will do, dont trust them dont leave your pump to them,just watch them overhaul your injection pump just to be sure they telling the right part to be replaced..and try to ask for their injection pump tester this means theyr proffesional calibrationist

  3. Join Date
    Oct 2002
    Posts
    84
    #3
    I recommend Betan Calibration,nagpa-calibrate ako last Oct. Ok ang shop,well trained ang mga mechanics,reasonable price,balik sayo lahat ng replaced parts. Iniwan ko yung sasakyan ko,then after two days..ok na! job well done with 3 months warranty.Paki-search na lang po yung website and contact numbers nila.

  4. Join Date
    Nov 2005
    Posts
    8
    #4
    salamat guys sa mga payo nyo

  5. Join Date
    Nov 2005
    Posts
    8
    #5
    sa bandang qc meron kayo marecommend? and mga magkano kaya abutin ang calibration ng injection pump?

  6. #6
    zexel ba yung IP?

  7. Join Date
    Oct 2002
    Posts
    22,658
    #7
    In Q.C., there's Denso in Banawe (though the actual calibration will be done in Caloocan if it will require more than a day's work) and there's Central Diesel along Quezon Ave. Papacalibrate sana kami sa Central Diesel. But they tested the vehicle and recommended that we only change the filters asap even before the due time (possibly na contaminate ng dirty fuel). If this does not work, then that's the time they will recalibrate.

    Gumana naman, naka-iwas sa gastos. hehehe.

    http://docotep.multiply.com/
    Need an Ambulance? We sell Zic Brand Oils and Lubricants. Please PM me.

Where to calibrate Isuzu 4JB1 injection pump