Clunk

Discussion in 'Fiat' started by milpol1, Apr 2, 2014.

  1. milpol1

    milpol1

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    I have a Autotrail Cheyenne 2007 840s with a ducato 3ltr diesel engine, with 21k miles, only had it since last week. The problem I have is when I start the vehicle as soon as I let go of the key ther is a clunking sound from the engine.....The engine runs fine otherwise. Any ideas would be appreciated..
     
  2. milpol1

    milpol1

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    Should add as soon as engine starts running the clunk is no more.
     
  3. wivvy's dad

    wivvy's dad

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    "They all do that Sir..."




    ::bigsmile:
     
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  4. jhorsf

    jhorsf

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    turn the volume up on the radio?
     
  5. Inthezone

    Inthezone

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    I have the same engine in my Autotrail, apart from the starter motor being loose, it may well be the exhaust striking something it would be work looking underneath whilst the engine is started, if you find it let us know:Smile:
     
  6. milpol1

    milpol1

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    OK took the MH down to reputable garage and they had a mechanic who had just left a Fiat main dealer and he had a look and said that the mounts look ok and mentioned the fact that the clunk is/was a n inherent problem with a 3 Ltr engine, !!!!!!!!!!!!!!!! Whom am I to argue, he did seem genuine, also stated that it all depends where the engine stops ie on what stroke depends how loud the clunk is!!!!!!!!!!!! Anybody else with a 3ltr 160bhp suffer this??
     
  7. pappajohn

    pappajohn Funster Life Member

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    could be the pre-engaged starter bendix is a bit vicious on its engagement with the flywheel.

    The starter motor gear (bendix) is thrown into engagement with the flywheel (ring gear) by an electromagnet fractionally BEFORE the starter begins to turn.
    The magnetic force used to engage could cause the bendix to 'clunk' as it engages and/or as its released .
     
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  8. aba

    aba

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    Never noticed a clunk though there has always been a thump as it starts but I can't find it maybe one of the mountings is a bit soft.
     
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  9. Techno

    Techno Funster Life Member

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    Mine has never clunked :roflmto: but if it did I'd want to know why
     
  10. smithy184

    smithy184 Funster

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    Got tne same on a knaus 700lg . I thought it was an issue when buying but was assured it was an inherent thing. Time wll tell (fingers crossed).
     
  11. Techno

    Techno Funster Life Member

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    Does it make any difference whether it is manual or Comfortmatic? As I say mine has never clunked.
     
  12. voyagerstan

    voyagerstan

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    dont forget guys clunk click every trip :winky::winky: stan
     
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  13. aba

    aba

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    As far as I know all gearbox problems on the x250 model have been related to the manual ones even the dreaded judder didn't seem to effect the comfortmatics.
    Although strangely enough I have never had judder on mine but there are a few gear ratios and mine is lower geared than a mates 3 litre panel van which incidentally judders like hell in reverse even empty.
     
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  14. milpol1

    milpol1

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    Well finally got to the bottom of the "clunk", cut a long story short, it was a duff battery losing voltage or whatever its called when starting the engine . A auto electrician friend had a look at it in relation to the radio filing etc and the fact that the electrics failed??? and said it needed a new battery, so off I go and get one, a Varta, £169. fitted it and lo and behold. Vehicle starts perfectly with no clunking at all. result Now and its a big NOW, need to try and get me money back, that will be a fight.
     
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