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Strange sound coming from LH cylinder head 8V

Discussion in 'Griso-Bella Chat & Tech' started by klaas123, Apr 27, 2010.

  1. klaas123

    klaas123 Cruisin' Guzzisti

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    Correct Pete, nothing wrong with my eyesight :lol:

    More detailed pictures:

    [​IMG]

    [​IMG]

    There is a strange wear pattern on the (inlet) cam surface seen in the first picture, a clear spot in the middle.
    The cambox tunnels where the tappets run in both seem fine (by look), play seems equal on both (by feel).
    The inlet adjuster caps are damaged (you can feel it), exhaust caps don't look good but damage can't be felt there.
     
  2. pete roper

    pete roper GT Godfather!

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    Yer tappets are pitted. Mine aren't. Gimme a front elevation view of the tappet.

    Pete
     
  3. klaas123

    klaas123 Cruisin' Guzzisti

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    First something else:

    The exhaust pushrod seems a prime candidate for the rattle, the top end (facing the cam) looks and feels like someone hammered on it, the bottom has grooves from exessive turning around:

    [​IMG]

    [​IMG]
     
  4. klaas123

    klaas123 Cruisin' Guzzisti

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    Here are the tappets Pete, exhaust is on the left:

    [​IMG]

    [​IMG]
     
  5. klaas123

    klaas123 Cruisin' Guzzisti

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    Before the recall a tappet broke in this cylinder head, that might explain the damage on the pushrod.
    I suppose the pushrod wasn't replaced then.
     
  6. pete roper

    pete roper GT Godfather!

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    If you can give me a front elevation, (Tappet from the side, like a 'T'.) that would help.

    Pete
     
  7. klaas123

    klaas123 Cruisin' Guzzisti

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    Like this Pete?

    [​IMG]

    Exhaust is on the left
     
  8. pete roper

    pete roper GT Godfather!

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    They're definitely 'Late' type tappets. I wondered if You'd got another batch of 'Early' types.

    pete
     
  9. klaas123

    klaas123 Cruisin' Guzzisti

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    Thinking about replacing the following parts:

    - exhaust tappet (cost??)
    - exhaust pushrod
    - valve clearence adjusting screws
     
  10. pete roper

    pete roper GT Godfather!

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    Can't you get someone to warranty this? I'd be going the whole schitz and replacing the carrier/cambox and everything involved with it.

    When you pulled the cambox/rocker-gear you did loosen/remove the two long bolts at the back of the cam tunnel didn't you?

    Pete
     
  11. klaas123

    klaas123 Cruisin' Guzzisti

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    No way Pete, the bike has been at the dealer and the importer, both say there is nothing wrong with my bike (former dealer has inspected the parts and found nothing wrong).
    Don't want to go that route again, not good for my blood pressure.

    Yes I have loosend them, used the factory recall PDF ;)
     
  12. pedmondson

    pedmondson Just got it firing!

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    I have 2009 Griso w/ 1500 miles (dealer demo) and I get a whisting sound from the RH cyclinder. Seems to happen when the bike is hot. At first it seemed to happend only while decelerating, but I have heard it now when accelerating. I am really starting to wonder about the quality of these bikes after reading numerous blogs indicating the same themes: poor fuel mapping; weird sound from the heads.................. I am experiencing both problems. Even thought the bike is under warranty, this is a hassle. Never experienced anything like this with any of the many other bikes I've owned.

    The dealer claims that the recall work (cams, tappets) was done and that the latest map is installed - GRS068.

    It'll go back to dealer for the 3rd time in 4 weeks! I will not be the least bit surprised if it comes back to me running like the constipated donkey I have come to know. I had hoped for a much better experience. I am not ready to give up on the bike, but it's a shame you just can't just start it up an ride it. It is a beautiful bike, great fit and finish, great heritage, bit at the end of the day, the bike needs to run without all the wierd sounds and constant stroking of the clutch to smooth things out.


     
  13. pete roper

    pete roper GT Godfather!

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    So, you *think* your bike has a problem? Your dealer says there isn't a problem and/or is incapable of dealing with it. So it's the machine's fault. Glad it works for you 'cos it doesn't for me.

    Give a slightly better overview of the nature of the problem and indicate you have some idea what might be wrong and there are people here and elsewhere who will probably waste a lot of their lives trying to help. If you've decided the bike is unsatisfactory and doesn't meet your expectations? Sell it and move on. It's really that simple.

    Pete
     
  14. Belfastguzzi

    Belfastguzzi Tuned and Synch'ed

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    The whistling sound might just be the normal whistling sound that they do make. Cam chain whirring round?

    Just a thought on the bad running:
    I got an updated fuel map, when the cam recall work was done. Bike has been running badly, or at least not running fantastically well, since then.
    The dealer did not reset the TPS after the loading the map. I now know that it is essential to do re-set, and having worked at the bike at the weekend, I saw that the TP reading was 8.8º to 10º at idle, rather than around 4.6º / 4.8º
    Bike is now running much better after re-set and fuel consumption readings already look improved. (I did do other tuning work as well.)
    So ask your dealer if the TPS re-set was done.
     
  15. Mi_ka

    Mi_ka High Miler

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    Any updates?
     
  16. Mi_ka

    Mi_ka High Miler

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    Bump!
     
  17. Mi_ka

    Mi_ka High Miler

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    Bump!
     
  18. klaas123

    klaas123 Cruisin' Guzzisti

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    Sadly still waiting for parts Mika.
    I have reassembled the bike with the old parts for now, it's summer over here.
     
  19. klaas123

    klaas123 Cruisin' Guzzisti

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    To my shame I see I've never finished this thread. After many months waiting I received the parts from Germany (did not want the Dutch importer earn a penny from me anymore). The cam housing, and a tappet + pushrod have been replaced by me and the noise was gone and still is. To be on the safe side I ad 800 ppm zinc from Camshield to the Agip oil totalling 2000 ppm zinc, also used Camshield grease to fit the camshaft. So problem solved.

    On a side note the dealer stopped being a Guzzi dealer and the importer was replaced by Piaggio at the end of 2010.
     
  20. Mi_ka

    Mi_ka High Miler

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    Better late than never! How much more did you wait for parts? And you jave covered how much kms since the repair?

    Whoa, its been three years since the last post.... It only makes me glad to see you resolved your issues and sad to see that I am three years less close to my dream bike...
     

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