Peculiar noise!

Discussion in 'Tech/Mech General' started by Wurn, Mar 7, 2011.

  1. Wurn

    Wurn Read Only Funster

    Joined:
    May 25, 2009
    Messages:
    73
    Likes Received:
    1
    Location:
    Essex
    Hi all, we have a 2005 Autotrail Cheyenne fitted wit a 2.8 Fiat deisel engine, it has done 13000 miles and had the cam belt changed last year due to age rather than mileage.I have a noise that is really bugging me, and as we are taking off on a long European trip shortly I would like to put my mind at rest.When starting the engine from cold there is a sort of rattly almost chain like noise from the top of the engine at the cam belt end.It disappears after a couple of minutes and only reappears when the engine is cold.Any ideas??? I have a mechanic coming round tomorrow to have a listen but was wondering if it is one of those "they all do it things" or similar.
    Cheers Paul.
     
  2. Wildman

    Wildman Read Only Funster

    Joined:
    May 30, 2008
    Messages:
    15,458
    Likes Received:
    8,598
    Location:
    Ilfracombe, Devon
    did they fit the full kit (pulleys etc) or just the belt. I sounds like a dry bearing grumbling use a screwdriver as a stethescope and try to locate the source.
     
  3. Loddy

    Loddy Read Only Funster

    Joined:
    Jul 5, 2008
    Messages:
    180
    Likes Received:
    3
    Location:
    south west
    It's probably the giggle pin getting worn and rattling against the laughing sprocket.

    They all do it :Wink:

    Loddy
     
  4. pappajohn

    pappajohn Funster Life Member

    Joined:
    Aug 26, 2007
    Messages:
    29,484
    Likes Received:
    16,967
    Location:
    YO11 2BD
    wot roger said....:Laughing:

    if they fitted the full pulley/belt kit it could also be the water pump on its way out.

    its advisable to change the water pump at the same time as the cam belt (not many do though !) as the cam belt has to come off to fit it.

    only real way to check it is to release the belt tension and see if theres any play/roughness in the pump spindle/bearing...but great care should be taken not to lose the belt timing.

    also...it may be a hydraulic tappet/cam follower is bit sticky and frees off when oil pressure increases.
     
  5. Loddy

    Loddy Read Only Funster

    Joined:
    Jul 5, 2008
    Messages:
    180
    Likes Received:
    3
    Location:
    south west
    slacken the belt but don't let it slip !!!!!!!1 your having a laugh, what terrible advise, Post edited by admin - insult removed:Doh:

    Loddy :Doh:
     
    Last edited by a moderator: Mar 8, 2011
  6. mick noe

    mick noe Funster

    Joined:
    Apr 14, 2009
    Messages:
    611
    Likes Received:
    509
    Location:
    near Boston Lincolnshire
    if you have hydraulic tappets probably one of those rattling until charged with oil. I have had the same problem with a couple of engines over the years and ignored it..... never gave me any trouble :thumb:
     
  7. Geo

    Geo Trader - Funster

    Joined:
    Jul 29, 2007
    Messages:
    9,547
    Likes Received:
    5,600
    Location:
    Mansfield,Notts
    Your words, Not Johns
    What a terrible comment:RollEyes:
     
    Last edited by a moderator: Mar 8, 2011
  8. Loddy

    Loddy Read Only Funster

    Joined:
    Jul 5, 2008
    Messages:
    180
    Likes Received:
    3
    Location:
    south west
    Release the belt tension = slackening the belt
    dont lose the timing = dont let it slip

    Post edited by admin - insult removed

    I said what terrible advise and it is, how do you know the original poster don't know one end of a spanner from the other, posting advise like that is not good.


    Loddy
     
    Last edited by a moderator: Mar 8, 2011
  9. pappajohn

    pappajohn Funster Life Member

    Joined:
    Aug 26, 2007
    Messages:
    29,484
    Likes Received:
    16,967
    Location:
    YO11 2BD
    you only need slacken the belt enough to move the pump pulley up and down....1mm will be enough and not possible for the belt to slip.
    something i wouldnt have a problem doing and i would use locking pins anyway....old school mechanicing still has its place in the workshop !
    No offense to wurn, and i may be wrong, but i assume he wouldnt have the knowledge to do this so a mechanic would be doing it anyway.

    oil pressure...if the follower is sticking or the oil is draining back out of it when stood for a period of time it may take a few seconds for it to free off or refill due to the thicker, cold oil.

    older vauxhall astra's/nova's were noted for it, sometimes 15 or 20 seconds before they went quiet.
     
  10. bazfergy

    bazfergy Read Only Funster

    Joined:
    Apr 20, 2009
    Messages:
    566
    Likes Received:
    3
    Location:
    dumfries scotland
    hope you're not planning on getting to many replies to any other questions if this is your way of thanking people:thumbdown:
     
  11. Wurn

    Wurn Read Only Funster

    Joined:
    May 25, 2009
    Messages:
    73
    Likes Received:
    1
    Location:
    Essex
    Ooops what have I done wrong?? Havnt had a chance to reply properly as been waiting for all the ideas! It has all been very helpful but please explain how I have offended you!!!!:cry:
    Cheers Paul.
     
  12. haganap

    haganap Funster Life Member

    Joined:
    Dec 5, 2007
    Messages:
    11,070
    Likes Received:
    13,681
    Location:
    Heavan
    You have done nothing wrong Paul and Bazzerfry was not aiming his comment at you
    Just a bit of the Ferrai V Mclaren Mechanics talk.

    John (papa) gives good advice and Loddy was merely pointing out what pitfalls there would be if you were not trained to carry out such a task (all be it in a little rude fashion)

    I think we would all do well to realise that Advice is exactly that, Advice. It should always be taken on face value with the emphasis on the word advice, and never attempting anything we feel uncomfortable with.

    My best advice would be Let a Mechanic look at it, let him huff, take a few deep breaths, sigh a bit, shake his head a few times, ask you how much you earn, and then give you the prognosis which will lead to diagnosis and then if hes reputable, a nice little bill at the end of it.
    I have had a similar thing on a few diesels and just put it down to oil travelling up to the top end. :thumb:

    good luck with it:Smile:
     
  13. Geo

    Geo Trader - Funster

    Joined:
    Jul 29, 2007
    Messages:
    9,547
    Likes Received:
    5,600
    Location:
    Mansfield,Notts
    I refuse to participate in a battle of wit with someone who is unarmed!:RollEyes:
    Geo
     
  14. Gooney

    Gooney Funster

    Joined:
    Jun 2, 2010
    Messages:
    4,759
    Likes Received:
    7,774
    Location:
    Flintshire
    Love it!! is it copywrited, thats one for future use.:thumb:
     
  15. Dodgey

    Dodgey Funster

    Joined:
    Oct 15, 2007
    Messages:
    1,603
    Likes Received:
    227
    Location:
    Gone RVing
    OIL

    Seriously, did you have an oil change when the belt was done. Reason I ask is that 'they' could have used the wrong type and it's to thick when the engines cold therefore not flowing and hitting correct pressure to 'work' the hydraulic tappets?
     
  16. Wurn

    Wurn Read Only Funster

    Joined:
    May 25, 2009
    Messages:
    73
    Likes Received:
    1
    Location:
    Essex
    Handbags!

    Thanks for that! I reread it all and realised what was going on. I am a Lotus man myself,just sold my Turbo Esprit ( and beleive me the Loads Of Trouble Usually Serious thing does really apply to LOTUS!) so I do know a bit about engines, mind you I would go through it all again.
    You would not beleive the mickey taking when I sold the Lotus and bought the Autotrail. Anyway the mechanic is going to listen tonight, but I think the sticky tappet sounds favourite from the location.
    Cheers Paul.
     
  17. Snowbird

    Snowbird Funster Life Member

    Joined:
    Apr 24, 2009
    Messages:
    10,141
    Likes Received:
    16,407
    Location:
    Liverpool.
    Have used Valvoline oil to cure sticking hydraulic tappets to great effect in the past.Its damn good oil.
    If that's your problem,do an oil change using Valvoline.
     
  18. Loddy

    Loddy Read Only Funster

    Joined:
    Jul 5, 2008
    Messages:
    180
    Likes Received:
    3
    Location:
    south west
    I am not unarmed, I have been in the trade on the spanners longer than you done more MOTs than you, and you are not always right on the advise you give, I sit in front of my computer sometimes and laugh aloud at some of the advise given but don't normally comment, the advise given about slackening a timing belt was not good.
    and by the way when I commented on MHF about my seat belt requirement you shot me down in flames saying I was wrong !! Guess what, you were

    Loddy
     
  19. pablomc

    pablomc Funster Life Member

    Joined:
    Apr 20, 2010
    Messages:
    860
    Likes Received:
    235
    Location:
    Co. Durham
  20. jhorsf

    jhorsf Read Only Funster

    Joined:
    May 15, 2009
    Messages:
    9,157
    Likes Received:
    8,067
    Location:
    DERBYSHIRE
Loading...

Share This Page