What now??

[ned37]

And I need one of those 90 degree screwdrivers to alter mixture. Any alternative to expensive carbtune model?

the one offered by motion pro works on the 2 right hand carbs, but hits the top of the alternator and won't work on the far left #1.  i use a very short cutoff common with a piece of semi-rigid tubing over it for the left.

[Sin_Tiger]

I initially bought the £15 bendy spring one but the drive broke away during the second use, I suspect that was a one off as plenty of people use them without issue.

Personally I wasn't so happy with the squidgy feel I got so decided on the gear drive item from carbtune as a replacement.  Much happier with the feel and have been able to  use it on other jobs due to the interchangeable tips.

Three times the price at £45 but it's quality and will probably see me off.

[t4tiger]

Hi, carbtune tool on order. Still can't solve slight backfire and the revs dropping slightly slowly when I decelerate. But does pull well and feels to be running well at higher revs   I have sprayed the carbs with carb cleaner whilst revving bike and can't detect any vacuum leak. I have replaced airbox breather tube and bunged it. 

Anything else I can try? Many thanks

[Sin_Tiger]

It's mentioned frequently here but in case you've missed it.

1 make sure the airbox assembly is complete and in good condition, no holes or broken bits,  including all the bits upstream of the filter I.e. All the way back under the seat.

2 the second intake, usually the right side, should have a rubber cap on it, if it's missing just cover it and secure it with a cable tie.

[Bixxer Bob]

.... and the revs dropping slightly slowly when I decelerate.....

Not played with carbs for a long while, but does that not suggest a sticking throttle slide or cable or damping issue, or a slight air leak between the carb and the cylinder head ie air getting in beyond the butterflies? 

[JayDub]

Did you balance the carbs? If not, it may be a good idea 

[Sin_Tiger]

BB has a point there. If you have had the carbs apart, an easy mistake is to drop the small O ring in the carb top when putting it back on, one of the easier things to check.

[GavD]

BB has a point there. If you have had the carbs apart, an easy mistake is to drop the small O ring in the carb top when putting it back on, one of the easier things to check.

Sin,

He's got Keihins hasn't he?

If so there's no small oring in the top of keihins. I found it a bit fiddley sometimes with the keihins to get the rubber vacuum gasket on the top of the slide to seat properly on top of the carb, and keep it in place when screwing the carb top back on.

T4Tiger - have a close look at the carb tops to make sure they are seated down properly, if not you may have air getting in there.

Number 6 which has to sit in the groove of the metal carb body, then number 1 screws down and seals it.
http://www.worldoftriumph.com/triumph_motorcycle_parts_locator.php?block_01=&block_02=100058916-1-2&block_03=23773 (http://www.worldoftriumph.com/triumph_motorcycle_parts_locator.php?block_01=&block_02=100058916-1-2&block_03=23773)

[Mustang]

also with the keihins , be very careful and delicate with that diaphram rubber as it can stretch and enlarge and  you will never ever get it to go back in the groove to seal 

slow return to idle ........................try screwing the mixture screws back in a tad . 1 1/2 to 2 turns out

[Sin_Tiger]

  

[nickjtc]

Don't we just LOVE faffing around with our trusty steeds! 

[JayDub]

Don't we just LOVE faffing around with our trusty steeds! 

Trusty??? 

[nickjtc]

Trusty??? 

I trust that it will do the business as long as I do not b#gger it up! 

[JayDub]

I trust that it will do the business as long as I do not b#gger it up! 

I heard of a tiger doing 200,000 km on a 3 year round the world trip... without a breakdown!... so I still have faith   :icon_wink: (and breakdown cover)

[threepot]

I heard of a tiger doing 200,000 km on a 3 year round the world trip... without a breakdown!... so I still have faith   :icon_wink: (and breakdown cover)

Try posting this on www.adventurebikerider.com and see what comments you may get? Gs obsession springs to mind!
Even though my steamer has done about 55k miles,and is now 17yrs young,I honestly believe it could handle a trip like that?  :icon_wink: