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  1. Join Date
    Jan 2011
    Posts
    642
    #1
    mga guru, hingin ko lang opinion ninyo regarding valve clearance adjustment. nagpa tune up ako ng sasakyan ni mrs, isuzu XUV matik. sabi ng mekaniko, higpitan ng kunti ang valve clearance, from 0.16 to 0.14, para maganda ang takbo. nagtanong ako sa mga isuzu owners na nandoon at nagpatune up din, ok naman ang feedback, bumilis daw ang sasakyan nila. ang problema, nang magawa na ang sa akin, pakiramdam ko, kumupad at hirap sa arangkada. wala namang ibang ginawa kundi ang valve clearance. chances are, yon talaga ang culprit. magkaiba ba talaga ang effect sa manual at matik? ok naman sa manual, makupad sa akin na matik. feeling full of regrets...

  2. Join Date
    Oct 2013
    Posts
    1,181
    #2
    Baka break in period pa, pero the truth is, check your service manual if hindi auto adjust ang valve clearance ng makina mo.

  3. Join Date
    Aug 2013
    Posts
    475
    #3
    hindi ko lang alam kung applicable din ito sa diesel.

    sa gasoline engine ko kasi dati, kapag tight ang valve clearance, tahimik makina pero ang downside, hirap, lalo na kung yung exhaust valves yung masisikip, tska kapag high rev ka, nag ooverheat o mas mataas sa normal temp.

    kapag maluwag naman valve clearance, maingay (tik tik sound) pero ok ang performance.

    may tamang way ang pag seset ng valve clearance. depende sa makina. yung iba gusto habang nasa operating temp sinusukat, yung iba naman kapag malamig pa ang makina.

    tska may range yung clearances na yan, hindi pwede hula hula lang din. mas mabuti yung pasok sa range na nasa owner's manual. kung wala naman owner's manual, kadalasan nasa hood naka stamp yung valve clearance.

    doon sa engine ko dati, gusto niya mahigpit sa intake valves, maluwag naman sa exhaust valves.

  4. Join Date
    Jan 2011
    Posts
    642
    #4
    i read a lot of reviews about this. ibalik ko sa mekaniko bukas, ipabalik to sa dating specs ng crosswind, yong 0.16. baka masira pa ang sasakyan, ayokong mag experiment pa.

  5. Join Date
    Oct 2009
    Posts
    2,271
    #5
    Quote Originally Posted by shelu View Post
    i read a lot of reviews about this. ibalik ko sa mekaniko bukas, ipabalik to sa dating specs ng crosswind, yong 0.16. baka masira pa ang sasakyan, ayokong mag experiment pa.
    itune up lang dapat kung may ingay TIK sound lagatak,ung makina..
    kung tahimik pa naman hindi na kailangan..

    malagatak naba kasi engine mo?

    kung ibabalik mo yan siguradong hindi na maibabalik sa dati kasi nga iniba na niya at siguradong hindi naman niya inilista ung
    sukat or valve clearance dati ,bago niya inadjust,

    kung ilang days palang naman ung pag kaka tappet adjustment.
    mag babago payan..hayaan mo nalang muna..1 week - 2weeks.

  6. Join Date
    Jan 2011
    Posts
    642
    #6
    ok sir. ill take your word

  7. Join Date
    Apr 2009
    Posts
    429
    #7
    Quote Originally Posted by shelu View Post
    mga guru, hingin ko lang opinion ninyo regarding valve clearance adjustment. nagpa tune up ako ng sasakyan ni mrs, isuzu XUV matik. sabi ng mekaniko, higpitan ng kunti ang valve clearance, from 0.16 to 0.14, para maganda ang takbo. nagtanong ako sa mga isuzu owners na nandoon at nagpatune up din, ok naman ang feedback, bumilis daw ang sasakyan nila. ang problema, nang magawa na ang sa akin, pakiramdam ko, kumupad at hirap sa arangkada. wala namang ibang ginawa kundi ang valve clearance. chances are, yon talaga ang culprit. magkaiba ba talaga ang effect sa manual at matik? ok naman sa manual, makupad sa akin na matik. feeling full of regrets...

    The best thing for you to do is show your mechanic your owner's manual the OEM valve clearance range. By experience kasi, medyo too proud mga backyard mechanics na akala
    mo alam lahat ng specs (though hindi nman lahat). If your mechanic does not like to see your manual, go look for a better and more experienced one. With old school diesel, if you err with the valve clearance, it is better to have a slightly loose than a tight valve clearance. Check also your manual if it requires the engine to reach operating temp before adjusting the valve clearance, if so and your mechanic adjusted it while the engine was cold, then definitely it will be tight when the engine reaches operating temp. One more thing is, it might be that your mechanic's feeler gauge is out of specs or baka nman alam nya yung valve clearance specs in inches but his feeler gauge is in mm and hindi nya alam i-convert. I have seen many backyard mechanics with this situation...

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