Results 1 to 4 of 4

Thread: Engine knock - 2015 high mileage Micra - Normal ??

  1. #1
    Junior Member
    Join Date
    May 2021
    Location
    Gatineau
    Posts
    1
    Garage empty: add car
    Thanks
    0
    Thanked 0 Times in 0 Posts

    Engine knock - 2015 high mileage Micra - Normal ??

    Hello,

    I'm thinking of buying a used 2015 Micra with manual trans and 145k km.

    At the end of my test drive, while re-entering the person's driveway, I noticed a slight "knock" sound from the engine at low rpm, sort of like a "Tok, Tok, tok". Have no idea what causes this, but it's as if one of the four cylinders was hitting the top part of the cylinder at each go around.

    It's not a loud sound and I'm even wondering if it's caused by something completely different than a piston knock or if it's even just a normal sound of this engine at low rpm ?

    I haven't bought the car, but just wondering if anyone here has an idea what this sound is caused by and if it's of concern...??

    I will of course take to a Nissan dealer to have it checked out if I decide to buy it, but just wondering if it's a common problem before spending money on a full check-up at the dealer.

    Thanks for any ideas or suggestions !

    Marc



  2. #2
    Senior Member
    Join Date
    Aug 2015
    Location
    Ottawa, ON
    Posts
    208
    Thanks
    4
    Thanked 47 Times in 32 Posts
    Valve tapping from the cam shaft?

        __________________________________________

        click to view fuel log View my fuel log 2015 Micra SV automatic: 10.0 L/100 km ... 28.4 mpg (Imp) ... 10.0 km/L ... 23.6 mpg (US) ...


  3. #3
    Senior Member Vaszya's Avatar
    Join Date
    Mar 2014
    Location
    Ottawa, Ontario
    Posts
    122
    Thanks
    93
    Thanked 31 Times in 28 Posts
    Hi Tipit, welcome to the club!

    Let us know what your mechanic says! 'Some' early Micras apparently had bearing issues that 'could' be what you're describing.

    Check this out https://micra-forum.com/showthread.p...=test#post8956
    Last edited by Vaszya; 05-26-2021 at 10:13 AM.

        __________________________________________

        click to view fuel log View my fuel log 2019 Micra S manual: 7.8 L/100 km ... 36.3 mpg (Imp) ... 12.8 km/L ... 30.2 mpg (US) ...


  4. The Following User Says Thank You to Vaszya For This Useful Post:

    MetroMPG (05-31-2021)

  5. #4
    Administrator MetroMPG's Avatar
    Join Date
    Feb 2014
    Location
    1000 Islands, Ontario
    Posts
    4,682
    Thanks
    1,616
    Thanked 622 Times in 475 Posts
    Marc - what did you decide?

    I would say "Tok, Tok, tok" is not normal. I think Vaszya is right to point to the bearing issues some early Micras had.

    The only unusual noise an otherwise healthy Micra engine makes the fuel injectors are slightly noisy. The engine has 2 injectors per cylinder, and I found I could hear them going "click click click click" at idle.

    Darin


        __________________________________________

        click to view fuel log View my fuel log 2015 Micra S manual: 5.0 L/100 km ... 56.5 mpg (Imp) ... 20.0 km/L ... 47.0 mpg (US) ...


  6. The Following User Says Thank You to MetroMPG For This Useful Post:

    Vaszya (05-31-2021)

Tags for this Thread

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •