1996 Triumph Adventurer 900 Troubles

Discussion in 'Technical Help' started by Dan Mercer, Mar 28, 2022.

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  1. Dan Mercer

    Dan Mercer Member

    Sep 25, 2021
    59
    18
    Sanford, Michigan
    Hi
    Here’s what I’m running into. I put the original needles in with the c clip in slot 2 as recommended by mikuni. Have good spark, gas in the float bowl but can’t get it to start. Carbs have been fully cleaned and new floats, pressure tested and held pressure. Cleaned the coil connectors and the spark plugs. I did have it running a couple of weeks ago and it ran but only on cylinders 2 & 3. Temp check on exhaust. Cylinder 1 70 degrees and 2 & 3 400 degrees. 2 & 3 was shooting out black smoke and flames with loud backfire. Now after every thing I’ve done today it still will not start. 16k miles. Any help or advise would be greatly appreciated. Thx in advance.

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  2. capt

    capt Elite Member

    May 8, 2016
    3,029
    750
    western Australia
    Jets (idle) and the ports are blocked..!
    Cause modern unleaded fuel is unstable especially if it has Ethanol ! It goes 'off' gels up the opening in jets or the channels/port's it should flow through !
     
    • Agree Agree x 1
  3. Dan Mercer

    Dan Mercer Member

    Sep 25, 2021
    59
    18
    Sanford, Michigan
    Hi,
    I’ve only used rec fuel with Techron additive. So shouldn’t be gummed up.
     
  4. capt

    capt Elite Member

    May 8, 2016
    3,029
    750
    western Australia
    If it's sat long enough , or , frequently enough been left sitting idle , and , unleaded ! It will gum up ! It's a given ! It won't be electrical , unless the battery has reach end of life ! So check battery and Pull apart those carburettors , clean and rebuild !
     
  5. Dan Mercer

    Dan Mercer Member

    Sep 25, 2021
    59
    18
    Sanford, Michigan
    Hi
    That’s what I’ve done. All new parts oem triumph from euro cycle in Vegas. New floats, complete cleaning. Pressure testing of the floats. Float levels to spec. New carb to head rubber mounts. Made sure all the tiny holes were cleaned with a torch tip cleaner. Ordering new stick coil conversion kit. New air filter and all carb gasket kits all oem. Can’t think of much else. Battery is new plus on a tender. Plus synced the carbs.
     
  6. capt

    capt Elite Member

    May 8, 2016
    3,029
    750
    western Australia
    Cleaned with pipe cleaners ? Really small ? files ? If you have taken material from any surface in the Jets or port's , the fueling won't be perfect , but that cylinder running cold , is lack of fuel to be burnt !
     
    • Useful Useful x 1
  7. Dan Mercer

    Dan Mercer Member

    Sep 25, 2021
    59
    18
    Sanford, Michigan
    #7 Dan Mercer, Mar 28, 2022
    Last edited: Mar 29, 2022
    Hi
    Torch tip cleaner and was extremely careful cleaning emulsion tubes. Put new pilot and main jets from triumph but didn’t work as well as the originals. It ran great when I parked it in November. Did have it running but like I mentioned black smoke and flames when it backfired on 2 & 3 but no fire on 1 when I started it two weeks ago.
     
  8. DCS900

    DCS900 Careful, man! There’s a beverage here!

    Sep 11, 2021
    2,338
    1,000
    LA
    Tried swapping the plugs around? Make sure it’s not them.
     
    • Useful Useful x 1
  9. Dan Mercer

    Dan Mercer Member

    Sep 25, 2021
    59
    18
    Sanford, Michigan
    I’ll give that a try. Thank you.
     
    • Like Like x 2
  10. sprintdave

    sprintdave Nurse,he's out of bed again

    May 25, 2014
    1,348
    750
    Birmingham
    Just a thought, how many miles has it done, have you checked the valves? Obviously do all the other simple things first as these are most likely.
     
  11. Dan Mercer

    Dan Mercer Member

    Sep 25, 2021
    59
    18
    Sanford, Michigan
    Hi
    I’m going to take it to a shop and let them diagnose it for me. Thx for the info. Plus has over 16k miles on it.
     
  12. surlyone2

    surlyone2 Active Member

    Mar 29, 2022
    108
    43
    New Zealand
    Not even run in,mate !
     
    • Like Like x 1
  13. surlyone2

    surlyone2 Active Member

    Mar 29, 2022
    108
    43
    New Zealand
    The ole famous words .. " shouldn't be " !
     
    • Agree Agree x 1
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