1999 Trophy 1200 Suspicious Engine Knock

Discussion in 'Newbies Hangout' started by Thescousesqurriel, Dec 4, 2025.

  1. Thescousesqurriel

    Thescousesqurriel New Member

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    hello everyone, I have a little issue, I got a 1200 Black block Trophy a couple months ago from bringing back to the road, I have found at idle the engine has a Knock to what to me seems to be the left side, I rebuilt the carbs months ago and don't know if this is involved but will mention anyway on choke it sounds Fine and riding But once at idle it starts to knock in or out of gear with clutch in and out, I hope someone has an idea on what it could be or what I could be looking for
     
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  2. Helmut Visor

    Helmut Visor Only dead fish go with the flow
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    Hi Thescousesqurriel :cool:
     
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  3. Markus

    Markus Crème de la Crème
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    Hi there!
    Welcome to the forum! ;)
    I hope you receive the right hint to get your issues solved soon.
     
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  4. sprintdave

    sprintdave Nurse, think it's time for his medications.

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    It could be the alternator shaft coming loose. If the sound gets less or goes away when you turn the lights on that will confirm it.
     
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  5. Mrs Visor

    Mrs Visor Crème de la Crème

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    Hi and welcome!
     
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  6. Robbi18

    Robbi18 Member

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    That's likely the infamous Triumph crocodile tick from the primary drive chain tensioner. It's loud at idle and often quiets down with rpm. It's a known, mostly harmless quirk on those older triples. Check the oil level first. If you want to quiet it, you can look into the upgraded manual tensioner from Steve Scriminger or T3.
     
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  7. joe mc donald

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    @Thescousesqurriel Welcome to the family. I to would opt for the tensioner. Also check carbs and plugs. Nice bikes do tap the upload a file button and show it of to the members.
     
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  8. Thescousesqurriel

    Thescousesqurriel New Member

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    I'll update a video now
     
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  9. Thescousesqurriel

    Thescousesqurriel New Member

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  10. Wessa

    Wessa Cruising

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    Hi and welcome….
     
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  11. Thescousesqurriel

    Thescousesqurriel New Member

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    thanks for having me
     
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  12. Thescousesqurriel

    Thescousesqurriel New Member

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    thank you the carbs was rebuilt with new plugs
     
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