Not Running On 3

Discussion in 'Technical Help' started by Busa99, Jul 7, 2022.

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  1. Busa99

    Busa99 New Member

    Jun 5, 2022
    0
    1
    Wiltshire
    Hi everyone I'm needing some help if pos,
    Ok bought a triumph adventurer 900 (1997)
    A few weeks ago now been working on it ever since, got it running but when it's cold it's only running on 2 cylinders then it will pop and bang and fart around then the cylinder will kick in? I have cleaned the carbs 4 times and there spotless, new inlet rubbers new plugs swapped the coils over no difference, any ideas would be a great help I have ran out of ideas on what else I can do.
    Many thanks in advance
     
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  2. dirty big hands

    dirty big hands Active Member

    Aug 4, 2017
    183
    43
    sussex
    Has it been sat unused for a long time?
    I have a Thunderbird, same engine etc, which ran rough when I first got it.
    It wasn't until I had chance to use it regularly that it sorted itself out ‍♂️
     
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  3. dirty big hands

    dirty big hands Active Member

    Aug 4, 2017
    183
    43
    sussex

    Errr.... not sure what that symbol at the end is about!
     
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  4. Busa99

    Busa99 New Member

    Jun 5, 2022
    0
    1
    Wiltshire
    Yes it had been sat for a long time. It has been sat since 2007:(
    I have just sealed the fuel tank so won't be able to ride it for at least a week. I think your right it needs a good run Thank you for your help
     
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  5. Eldon

    Eldon Elite Member

    Nov 14, 2018
    4,060
    800
    North Yorkshire
    Valve clearances are?
     
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  6. Busa99

    Busa99 New Member

    Jun 5, 2022
    0
    1
    Wiltshire
    No idea not checked them
     
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  7. sprintdave

    sprintdave Nurse,he's out of bed again

    May 25, 2014
    1,491
    750
    Birmingham
    Any idea when valves were last checked, if at all? Should be done every 12000 miles.
    With luck you may get way with running redex or similar ( if you can get it I believe Seafoam is good) in the tank for a couple of fill ups, could well be a tiny blockage in pilot jet.
    How did you clean the carbs, spray or ultrasonic clean?
     
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  8. Busa99

    Busa99 New Member

    Jun 5, 2022
    0
    1
    Wiltshire
    The bike has done just over 8k
    I have stripped and cleaned the carbs to an inch of there lives with carb cleaner, and all jets are clean
     
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  9. joe mc donald

    Dec 26, 2014
    13,874
    1,000
    slough / burnham
    Busa99
    Sounds carbs to me. Make sure all the carbs are synced properly and like yous say get a good run or two on it.
    Joe.
     
  10. Wattie

    Wattie Well-Known Member

    Feb 25, 2020
    350
    63
    UK
    I know you mentioned plugs and coils but have you been able to swap around the HT leads, or replace? I had a HT lead go bad on me although that caused problems when warm, so probably not your cause, but it is a simple swap around if the leads are long enough, just to rule it out.
    I also had poor running on some older fuel, I used some forte moto power (I think it was I not II) and added some esso 99 non ethanol fuel, once the tank had run through, the bike was running perfect again (2002 trophy 1200, so also with carbs). Good luck, because I always thought those versions of the 900's were one of triumphs best.
     
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  11. Busa99

    Busa99 New Member

    Jun 5, 2022
    0
    1
    Wiltshire
    I have synced the carbs there spot on.
     
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  12. Busa99

    Busa99 New Member

    Jun 5, 2022
    0
    1
    Wiltshire
    Many thanks for your input something else to try
     
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  13. t552

    t552 Senior Member

    Nov 17, 2014
    415
    113
    Bristol UK
    My money is on blocked pilot jet. You hsve to poke them through.
     
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  14. Busa99

    Busa99 New Member

    Jun 5, 2022
    0
    1
    Wiltshire
    I took it for a blast today 130 miles so I'm going to see if that has cured the problem tomorrow
     
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