Question about 2004 Triumph Thruxton 900

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My 2004 Triumph Thruxton only runs on one cylinder after one year in storage. I replaced the spark plugs which do both spark. There is gasoline in both carburator bowls. Is this due to some known problem?

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Need to remove the carbs and clean and adjust them. Sounds like you got a pluged jet or air flow port.

Posted on Oct 04, 2009


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How to install BC airbox removal kit on a triumph america

You got to really want to do this. It's a lot of nutz and boltz.
See if these videos steer you in the right direction -

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1 Answer

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One of the carburetors could be sucking in air through the vacuum port. Had a similar issue on a thruxton. Triumph puts a rubber cover on them. Sometimes the rubber cracks and sometimes the covers just fall off.

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1 Answer

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not enough info, does it seem like it too hot, what color are your plugs.

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2004 triumph thruxton 900 won't start. Has does not have spark. then it does have spark then it starts.already checked ingintion, igniter and coil. If you mess with the key enough it will start but...

Dont you just hate the intermitent faults? However messing with the ignition should have no bearing on the fault, other than the connection plate inside the switch has become corroded or worn away, have you removed or replaced the switch? Ifyou remove the switch and dismantle the base carefully to check for ware or corrosion, this can normaly be repaired by using a file or some heavy sandpaper to clean the contact plate, igniter units either work or they dont,

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That sounds like the regulator / rectifier has blown
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bad ignition module or pickup coil...or wiring to the components could cause the ignition to fail... also check plug caps ,plugs and wires

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Check your auto parts supplier for automatic Bleed screws. I've used them on a VFR.

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1 Answer

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so manny reason for that problem but lets go to basic replace your spark plug first

Sep 17, 2009 | 2004 Triumph Thruxton 900

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