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  1. Join Date
    Dec 2007
    Posts
    28
    #11
    Quote Originally Posted by eyshmechanic View Post
    before you conclude na piston ring ang sira please check:
    1. maiitim ba usok sa tambutso?
    2. kung maitim ang usok, remove the the spark plugs kung maitim din (maraming carbon)
    3. dapat isa lang ang maitim kung piston ring ang sira. very unusual na lahat ng piston ring masira ng sabay-sabay
    4. kung lahat maitim most probably na di piston ring ang sira, maaring leak lang somewhere.
    Maputi po ang usok sa tambutso. Maraming usok lumalabas pag apak sa accelerator. Isang spark plug lang po ang maitim at oily.

  2. Join Date
    Jan 2006
    Posts
    1,682
    #12
    How did you do the break in after overhauling?

  3. Join Date
    May 2007
    Posts
    243
    #13
    Quote Originally Posted by roy_roger View Post
    Maputi po ang usok sa tambutso. Maraming usok lumalabas pag apak sa accelerator. Isang spark plug lang po ang maitim at oily.
    kung isa lang spark plug ang maitim at oily. pwedeng piston ring nga. ang may problem ay yung may maitim na spark plug.

    ang dukot, tatanggalin ang oil pan sa ilalim ant doon bubunutin ang piston.

    i wonder lang why puti ang usok, usually kasi itim because of unburned oil. palyado ba?

  4. Join Date
    Jun 2008
    Posts
    36
    #14
    i would have to agree with eyshmechanic. pwedeng piston ring nga. pero no harm done to check for other causes din sa pagkain ng langis- magastos din magpadukot.

    AFAIK, puti usok pag naghalo na ang langis sa loob where it shouldn't be... i read somewhere condensation issue na to... dunno...

  5. Join Date
    Dec 2007
    Posts
    28
    #15
    Thanks everybody for your inputs. I have decided to have my car overhauled last Friday. Well, it was discovered that it has a damaged engine block cylinder (maraming deep scratches) and piston ring. Further, one of the pistons has deep cavities in its head. They recommended sleeving and to change the piston and piston ring.

    Here are the major expenses I incurred for your info:

    Liner = P1650
    Sleeving = P2000
    Piston = P1650
    Piston Ring = P950
    OH Gasket = P1250
    OH labor = P3500

    Again thank you for all the information offered here.

  6. Join Date
    Jan 2008
    Posts
    4,726
    #16
    puti ang usok pag nasusunog ang engine oil same with 2T motorcycle engines kaya maputi ang usok gawa ng oil na nakahalo sa fuel...

    its good na naayos na hinay hinay muna sa pag papaandar...

  7. Join Date
    Aug 2006
    Posts
    231
    #17
    pwede ba magtanong kung damaged piston ring na itong 10 year old, 311,000 kms adventure 4d56 diesel namin. ganito kasi, kapag naka idle at binuksan mo takip ng engine(yung plastic na itim) may nalabas na usok at oil na tumatalsik, at sa oil dipstick naman may oil na tumatalsik at usok din...

    sa tingin nyo mga sir, ano kaya possible problems na ng 311,000 kms old adventure namin diesel. mula't sapul wala pa tong overhaul.. minsan nga umaabot ng 8 months before mapa change oil... more than 2 years na ung usok at oil sa takip at dipstick.

    ano po kaya??? grabe na kasi usok eh.

  8. Join Date
    May 2007
    Posts
    243
    #18
    baka mga valve seals lang problem.

  9. Join Date
    Nov 2003
    Posts
    3,849
    #19
    at 300+k kms it really might be time to pull down the engine. pero ipasilip mo rin muna para sure.

  10. Join Date
    Jul 2008
    Posts
    9
    #20
    Quote Originally Posted by roy_roger View Post
    I suspect that my car has a damaged piston ring because it continues to consume a lot of oil even though I had the valve seals replaced already.

    My car was overhauled about a year ago. Do I need to have it overhauled again? Is there any cheap way of replacing the piston ring without overhauling the engine?

    What happens to the engine if I continue to use my car with a damaged piston ring? Wala pa kasing budget sa ngayon e.

    Do you know of any shop you can recommend who can do the above repair at a reasonable/cheap price in Makati/Pasay area? How much would I need to budget for the repair?

    it seems that your car is burning oil already, possible yung piston rings worn out na or baka nag stock up lang yung oil rings and piston rings sa piston due to carbon deposits or may tama na yung cylinder liner mo, if thats the case sleeving lang ang kailangan kung gusto mo ibalik sa standard size ang bore ng cylinder or the other way reboring palitan lang ng mas malaki na piston depende sa bore na gusto mo but the catch is malakas ang hatak, malakas din lumamon ng gas. change the bearings also main and connecting rods this is the very secret formula kung mag ooverhaul, kasi ang iba nag sasabi na ok pa yung bearings balik na lang natin thats not a good idea kasi may play na yung lumang bearings sa crank saft at sa connecting rod ng piston baka mag co cause pa ng stock up.

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Damaged Piston Ring