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Nissan qashqai 1.5 dci k9k - fires hard on a warm engine

mirek2610 8142 12
This content has been translated flag-pl » flag-en View the original version here.
  • #1
    mirek2610
    Level 6  
    Hello, everyone on the forum!
    I am the owner of the Nissan Qashqai year-2010, 1.5 dci k9k engine. In August I had engine failure (broken piston) was replaced with another used engine. The problem is that a cold engine starts better like a warm one. Computer diagnostics did not show any errors. When the engine starts it works perfectly. In addition, fuel consumption increased from 6.2l to 7.5l / 100km.
    Has anyone encountered such a problem, if so help please, because I already lack ideas.
    Thank you in advance.
    Mirek2610.
  • #2
    jdubowski
    Tube devices specialist
    mirek2610 wrote:
    The problem is that a cold engine starts better when warm. Computer diagnostics did not show any errors

    And the data from all sensors (especially temperature) are correct?
  • #3
    mirek2610
    Level 6  
    Komp did not show any errors. Once there was a shaft sensor error (I will replace it) but somehow I am not convinced that this is it.
  • #4
    jdubowski
    Tube devices specialist
    mirek2610 wrote:
    Komp did not show any errors.


    I didn't ask about that.

    If the temperature of the block will be 70 C and the sensor will report it as 20 C, "comp" will not show an error, and you will have a problem with "firing" warm.
  • #5
    mirek2610
    Level 6  
    I didn't check it. I will try to check it again. The weird thing is that it starts quite differently. It happened a few times that he lit the third time in the cold, new glow plugs.
  • #6
    User removed account
    Level 1  
  • #7
    mirek2610
    Level 6  
    If there was something wrong with the injections, would the car behave strangely (power loss, exhaust smoke or other symptoms) while driving?
    Because my nissan if it starts, on the road behaves without complaint.
  • #8
    User removed account
    Level 1  
  • #9
    mirek2610
    Level 6  
    Thank you KotBury for accurate illumination of the problem of injectors. However, I need to tell you more exactly how it happened. Okuzuj original engine suffered a piston failure and I had to replace it with another used. The previous one went without worries to the end. The injectors from the broken engine were replaced they worked until the very end. After the engine start, problems with firing started. Therefore, whether it is the cause of the injectors if they worked flawlessly in the previous engine.
    Kissing Mirek2610
  • #10
    User removed account
    Level 1  
  • #11
    mirek2610
    Level 6  
    The overflow test is carried out as it should be. On Monday I will replace the crankshaft position sensor and the coolant temperature sensor. If this does not help, I know what to do next. The fuel filter was replaced with a new one. After the engine slip I drove about 800km.
  • #12
    User removed account
    Level 1  
  • #13
    krystian01533
    Level 2  
    What a substantive answer to make them only in this forum, thanks to YOU CAT BURY I know that I broke the injection myself :) I mean only valves