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Engine noise - normal?

  • 14-08-2013 4:37pm
    #1
    cojomo2
    Registered Users, Registered Users 2 Posts: 3,220 ✭✭✭


    I've noticed this noise- been like this for a while , quite possible since I got it, but not sure. Is it normal? Its the light tapping noise you can hear in the background. Any ideas? thanks






    The only reply on youtube is another z750 owner that says ''my Z is the same noise that's okay valve clearance too large. No problem :-)''

    what does he mean by valve clearance too large? Is it just a characteristic of this model or is it time to have them checked? According to the manual, they don't need checking for another 20k km or so...thanks


Comments

  • #2
    jimgoose
    Registered Users, Registered Users 2 Posts: 20,180 ✭✭✭✭jimgoose


    It means the valve-clearances have opened out from wear-and-tear and instead of gliding round the valve lifter and nudging it down and out of the way, the cam is "smacking" it. Have the clearances checked and set by someone who knows what they're at, and verify the amount and type of oil in it.


  • #3
    the drifter
    Closed Accounts Posts: 7,348 ✭✭✭the drifter


    what year Z is it?

    Must have a listen to mine when im home later


  • #4
    cojomo2
    Registered Users, Registered Users 2 Posts: 3,220 ✭✭✭cojomo2


    the drifter wrote: »
    what year Z is it?

    Must have a listen to mine when im home later

    2008- noise seems to only be present when the engine warms up and only at idle, sound just like the z in the youtube link, not very noticeable but you would hear it if you were looking for it. I'd be interested to know is yours the same.

    What year is yours?


  • #5
    the drifter
    Closed Accounts Posts: 7,348 ✭✭✭the drifter


    Cool ive a 2007 one. what mileage is up on yours ive 17500kms


  • #6
    cojomo2
    Registered Users, Registered Users 2 Posts: 3,220 ✭✭✭cojomo2


    jimgoose wrote: »
    It means the valve-clearances have opened out from wear-and-tear and instead of gliding round the valve lifter and nudging it down and out of the way, the cam is "smacking" it. Have the clearances checked and set by someone who knows what they're at, and verify the amount and type of oil in it.

    Hi- when you say 'it' , are you referring to the actual noise in the video, or the comment the guy made about the valve clearance.?

    I'd be surprised if it was valve clearance as they arnt due to be inspected for ages..oil etc is good, the bike is very well looked after.


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  • #7
    cojomo2
    Registered Users, Registered Users 2 Posts: 3,220 ✭✭✭cojomo2


    the drifter wrote: »
    Cool ive a 2007 one. what mileage is up on yours ive 17500kms
    20k km..only put up about 4km of that myself though


  • #8
    jimgoose
    Registered Users, Registered Users 2 Posts: 20,180 ✭✭✭✭jimgoose


    cojomo2 wrote: »
    Hi- when you say 'it' , are you referring to the actual noise in the video, or the comment the guy made about the valve clearance.?

    I'd be surprised if it was valve clearance as they arnt due to be inspected for ages..oil etc is good, the bike is very well looked after.

    Both. Kwaks have always suffered badly with clearances. There's a lot of fine old ZXRs about that are uneconomical to freshen due to needing a slew of new valvetrain components from Hammamatsu. Clacking when hot would be typical as well, as the metals expand. Maybe something of nothing, but if 'twere me I'd have her checked.


  • #9
    serious3
    Registered Users, Registered Users 2 Posts: 1,026 ✭✭✭serious3


    sweet mother divine if i posted video of the racket my triumph makes at idle it would have you running to the dealer!


  • #10
    cojomo2
    Registered Users, Registered Users 2 Posts: 3,220 ✭✭✭cojomo2


    serious3 wrote: »
    sweet mother divine if i posted video of the racket my triumph makes at idle it would have you running to the dealer!

    Lol ..what bike is it?


  • #11
    serious3
    Registered Users, Registered Users 2 Posts: 1,026 ✭✭✭serious3


    cojomo2 wrote: »
    Lol ..what bike is it?

    a triumph trophy, 900cc triple, it sounds like a diesel powered rock crusher at idle and not much better at 5000rpm!!!


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  • #12
    the drifter
    Closed Accounts Posts: 7,348 ✭✭✭the drifter


    checked mine last night......my exhaust is to loud :P


  • #13
    Wossack
    Registered Users, Registered Users 2 Posts: 7,025 ✭✭✭Wossack


    on the bright side, loose valves are better then tight ones :)

    does it go away with the clutch pulled in?


  • #14
    cojomo2
    Registered Users, Registered Users 2 Posts: 3,220 ✭✭✭cojomo2


    Wossack wrote: »
    on the bright side, loose valves are better then tight ones :)

    does it go away with the clutch pulled in?

    Nope...I notice it when at the lights in 1st with the clutch in, or when in neutral with the clutch out...I'm a bit of a nazi when it comes to engine noises so maybe it's normal...at least I hope it is...


  • #15
    MonstaMash
    Closed Accounts Posts: 1,443 ✭✭✭MonstaMash


    jimgoose wrote: »
    It means the valve-clearances have opened out from wear-and-tear and instead of gliding round the valve lifter and nudging it down and out of the way, the cam is "smacking" it. Have the clearances checked and set by someone who knows what they're at, and verify the amount and type of oil in it.

    +1


  • #16
    cojomo2
    Registered Users, Registered Users 2 Posts: 3,220 ✭✭✭cojomo2


    the drifter wrote: »
    checked mine last night......my exhaust is to loud :P

    What have u got? Have an ixil hyperflow on mine ..it's insane loud unless you fit the little metal silencers ..


  • #17
    LookBehindYou
    Registered Users, Registered Users 2 Posts: 994 ✭✭✭LookBehindYou


    Your kwawker is fine. The day I test rode it, there were no worrying noises coming from engine. It rides like a new bike, just better.


  • #18
    cojomo2
    Registered Users, Registered Users 2 Posts: 3,220 ✭✭✭cojomo2


    LookBehindYou wrote: »
    Your kwawker is fine. The day I test rode it, there were no worrying noises coming from engine. It rides like a new bike, just better.

    Cheers Mick , yep I think I was just looking for faults ..my minds at ease now..back to enjoying it..planning on getting out for one of the sunday spins very soon.


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