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Colourtune advice
r1_pete - 2/1/09 at 02:08 PM

Has anyone used a colourtune to balance the idle mixture on an engine running bike carbs?

Mine rattles the clutch at low tickover so its obvious the cylinders are fighting one another, figured a colourtune and getting all the pots firing the same colour might be an answer....


DIY Si - 2/1/09 at 02:17 PM

I've used one before. Brilliant idea/invention. It would also be worth getting the throttles lined up. They can look ok, but be a fair bit out if your not careful.


jollygreengiant - 2/1/09 at 02:21 PM

Carb balance first, then colour tune.


BenB - 2/1/09 at 02:22 PM

I've used one. Great little bit of kit.
I know some people smirk at the idea but for me it was a great little purchase. I used a colortune to set the idle jets, synchronized them with a Carbtune and voila.

Took it along to TTS "to get jetted" and they said it was 99% perfect and only shimmed one bank because the lambda was a tiny bit off.... Didn't make any difference and now it runs rich so might remove the shim anyway...


r1_pete - 2/1/09 at 02:25 PM

Thanks guys, I've balanced the butterfly's with a set of gauges, its just the idle mix I need to sort.

Think I'll invest in one...


HAL 1 - 2/1/09 at 02:26 PM

As above,
if you can possibly get hold of one for each cylinder it's even better,

mate and myself bought 2 each from autojumbles etc


coozer - 2/1/09 at 02:37 PM

Get over to Bogg Brothers, you know it makes sense!


r1_pete - 2/1/09 at 02:45 PM

Yep I'll be over there second trip after MOT, got the brakes to build and car to paint 1st though. Just need it running a little better before the drive though.