Bonneville America Forums Forums Technical Forums Performance Mods Anyone use a colourtune

I just read about this somewhere. It seems like it would be easy way to adjust the carbs(in theary).Anyone have any luck with it?

Have not used one......it would be a lot cheaper and probably just as effective to check the color of your spark plugs from time to time.

PDS85.

I have one here.. MANY many years ago I used it on some of my earlier bikes / cars, if Im honest there a nightmare to use as you have to have the bike running and you need to get close and the heads get hot...

Getting both sides the same can be a pain too as differences in colour are very subtle and to the naked idea you can only guess both sides are the same.

I would bet money that you could get as near by doing what most do, turn each mixture screw in till engine hunts, turn it out till it hunts, then go to the middle, same on the other side.

Good luck,

between checking the plug and messin with the screw, i'll get it. I just read about the colourtune this morning. i've never heard of one before and it sounded interesting, as long as it worked.