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  1. Join Date
    Nov 2002
    Posts
    183
    #1
    I have a diesel ride and here are some of the observations:

    1. Oil level increases significantly after a month or so because of fuel contamination. About 4 liters of fuel is being added to the engine oil after 2 months.

    2. No overheating.

    3. White smoke during start-up, but decreases after a few minutes of driving.

    4. With the raiadtor cap removed, water spews out.

    5. Water level in the radiator remains the same.

    6. No oil traces in the radiator coolant.

    Weird?

  2. #2
    top overhaul.

  3. Join Date
    Oct 2002
    Posts
    13,415
    #3
    Weird... #4, 5 and 6 should result to #2.

  4. Join Date
    Oct 2002
    Posts
    10,812
    #4
    it's not weird at all if you start thinking that there is not one problem but several at the same time. consider the sysptoms individually or group logically and go from there. sabi nga, when confused, keep the solution simple.

    1 -- you have a leaking injector. rectify this right away since diluted oil leads to premature wear.

    2-6 -- there is a very small leak on the cylinder head gasket BUT it is a leak only between one cylinder to a water passage. that is why there is no oil in the water. since the leak is small, probably just a gasket that is not seating right, then when the engine warms up it seals itself close. this is why the white smoke disappears after the engine warms up and the engine does not overheat. don't wait for the leak to grow bigger. have the cylinder head removed and checked.

  5. Join Date
    Nov 2002
    Posts
    503
    #5
    The Fuel injection pump is being lubricated by the high pressure engine oil. When the seals of the pump wear out, the higher pressure of the diesel injection contaminates the oil. So it is the diesel fuel intrusion that increases the volume of oil within the engine. Diesel fuel does not have the additives of the lubicant much less the right viscosity of oil. Prolong use will lead to worn out bearings that will lead to spun bearing. DISASTER.

    Check your oil and it is thinner(less viscous) than what it is supposed to be.

  6. Join Date
    Nov 2002
    Posts
    183
    #6
    Quote Originally Posted by yebo View Post
    it's not weird at all if you start thinking that there is not one problem but several at the same time. consider the sysptoms individually or group logically and go from there. sabi nga, when confused, keep the solution simple.

    1 -- you have a leaking injector. rectify this right away since diluted oil leads to premature wear.

    2-6 -- there is a very small leak on the cylinder head gasket BUT it is a leak only between one cylinder to a water passage. that is why there is no oil in the water. since the leak is small, probably just a gasket that is not seating right, then when the engine warms up it seals itself close. this is why the white smoke disappears after the engine warms up and the engine does not overheat. don't wait for the leak to grow bigger. have the cylinder head removed and checked.


    Thank you sir. Regarding #1, i see two possible causes. It's either the injectors are leaking or the leak is coming from the injection pump, as what Mr. Turbo said. If the injectors are leaking, is there a possible oil dilution? Isn't it that the injectors are directed inside the combustion chamber? Sorry for asking.

  7. Join Date
    Nov 2002
    Posts
    183
    #7
    Quote Originally Posted by turbo View Post
    The Fuel injection pump is being lubricated by the high pressure engine oil. When the seals of the pump wear out, the higher pressure of the diesel injection contaminates the oil. So it is the diesel fuel intrusion that increases the volume of oil within the engine. Diesel fuel does not have the additives of the lubicant much less the right viscosity of oil. Prolong use will lead to worn out bearings that will lead to spun bearing. DISASTER.

    Check your oil and it is thinner(less viscous) than what it is supposed to be.
    This is exactly what a calibration center told me. But i was inclined not to believe them right away beacuse i was still considering other sources of oil contamination. like valve seal failure, injector leaks, etc.

  8. #8
    owner naman naoverhaul kasi napabayaan ang fuelpump...lumiyab at nadisplace ang oil, so machine shop!

    cause: oilseal ng fuel pump leaked!

    3au owner po namin.wag mo na paabutin sa ganun.

  9. Join Date
    Sep 2005
    Posts
    103
    #9
    Most definitely Head gasket problem!

  10. Join Date
    Jan 2006
    Posts
    1,682
    #10
    Agree ako kay Yebo.

    kung short trips ka lang you might not notice the overheating. Another reason na hindi ka nag ooverheat is maybe the diesel fuel in the oil serves as a coolant. Good for cooling but not for lubrication. My advise is top overhaul. Prolong use might cost you a general overhaul.

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Not your typical engine problem...