Who uses Colourtune?

[Jojax]

Was thinking about getting this to get the mixture right on my new carb. Anybody use it?
Opinions please.

[simmitc]

Used to use it on motorcycles, very simple. If you're talking SU on a Minor then absolutely no need for anything other than the built in tuning device.

[Jojax]

You talking about the lifting pin?

[Trickydicky]

No, the built in tuning device being the colour of the plugs

[Jojax]

Mine were black today......

[kennatt]

Pointless with an SU, as said the lifting pin and plug colour are all you need.

[simmitc]

Mine were black today......

If that is after a good run as opposed to just starting up for a couple of minutes then either you are using a lot of oil, or your carb is set too rich. Just possibly (c) both

[dalebrignall]

colour tune is fine

[bmcecosse]

Waste of money! You don't need it with an SU carb. Adjust for 'best idle' - then test with the lift pin..... then a good run and switch off at speed - and pull the plugs for a check. Should be 'biscuit' colour - and no, not chocolate biscuit - or Bourbon...

[kennatt]

had a good holiday BM

[bmcecosse]

You bet!

[wickermonkey]

If you dont know what your looking for though would a colourtune make things simpler?

[Jojax]

Your looking for a Bunsen-blue flame through the glass plug.

[bigjim]

a cheap good tool , easy to use

[gtt1951]

I've used the colourtune, but then I've had mine since the 1980's (used on all sorts of cars). OK to use on SU carbs - gives you that extra bit of visual confirmation.
George.