Tappet Adjustment?

Discussion in 'Engine Compartment' started by Sat-Chit-ananda, Oct 25, 2010.

  1. Sat-Chit-ananda

    Sat-Chit-ananda

    Messages:
    2,925
    Location:
    Namma Bengaluru
    Car:
    Grande Punto 1.3MJD Emotion Pk
    Folks,

    Does 1.3 MJD engines requires tappet adjustment? I feel mine has tappet noise.

    -Sat
  2. amolmane

    amolmane Guest

    No Mutijet engine does not require tappet Adj.
    It has HLA (Hydraulic Lash Adjusters) i.e. hydraulic tappet.
    Due to HLA , there is zero tappet clearance when engine reaches to its operating temp
  3. jumu

    jumu Superiore

    Messages:
    742
    Location:
    Chennai
    Car:
    Grande Punto 1.3MJD Active
    Well , I am also feeling a little tappet noise at speeds above 100.I was a bit hesitant to mention it as I thought it might go away. Now i have company. Lets try to understand from the engineers amonst us. ::D

    Abdul
  4. arishi

    arishi Regolare

    Messages:
    429
    Location:
    Mumbai, Maharashtra, India
    Car:
    Grande Punto 1.3MJD Emotion Pk
    Pardon my ignorance but what is tappet adjustment and how do I know if my car has a tappet noise.
  5. amolmane

    amolmane Guest

    To
    Arishi
    Tappet Adjustment means to set Valve Clearnace. In Hydraulic Tappet (HLA), this adjustment is done automatically as the valve clearance increases as per rising of Engine Temp.
    When engine reaches its operating temp. HLA creates ZERO VALVE CLEARANCE.
    Due to ZERO Valve clearance you get faster Valve operation & lagless performace of valves

    Diesel with Kerosene is nightmare for HLA . I have seen premature failure of HLA of DDiS & Quadrajet engines

    So Be aware from 3rd class fuel quality,if you get heavy kerosene,then you will faced heavy expenditure
    Do you know what is expenses due to kerosene in diesel ?
    4 Electronic Injectors + High Pressure Fuel pump + new Fuel rail = Rs.1.5 Lacks approx.
  6. arishi

    arishi Regolare

    Messages:
    429
    Location:
    Mumbai, Maharashtra, India
    Car:
    Grande Punto 1.3MJD Emotion Pk
    Thanks! for the explanasion and 1.5Lacks!!! ::OO ::OO wow!! thats huge... I generally prefer to refuel from a COCO pump hoping that the contamination is minimal there, its really difficult to find how much contaminated fuel we are getting at a specific pump.
  7. Sat-Chit-ananda

    Sat-Chit-ananda

    Messages:
    2,925
    Location:
    Namma Bengaluru
    Car:
    Grande Punto 1.3MJD Emotion Pk
    Over 100, Mine is only during startup or idle.

    -Sat
  8. Andy

    Andy

    Messages:
    1,102
    Location:
    Chembur Mumbai
    Car:
    Grande Punto 1.3MJD Emotion Pk
    ive not found anything fishy with my baby
  9. Sumit

    Sumit Superiore

    Messages:
    535
    Location:
    Munger
    Car:
    Grande Punto 1.3MJD Active
    does the multijet engine require to be started everyday like the way it was done in old generation diesel engines. or if its not started for ten days the injectors and tappets may get jam due to frozen diesel ? this may increase the sound from the engine. plz comment.
  10. karthik1100

    karthik1100

    Messages:
    97
    Location:
    Bangalore
    Car:
    Fiat Enthusiast
    does modern engine have tappets? isnt it replaced with cams?

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