Color tune in action

[raistian77]

Color tune came in the mail today. Checked all 4 cylinders 1 was lean, 2 was rich, 3 was lean, 4 was good. Checked up to 3,000 RPM (about 1/4 throttle) rich at first fading to a good mixture.

this was 4


this was 2 before adjust


this was 2 after adjust



turn in air pilot screw till flame turns yellow then back out till flame just turns blue.
at 1/4 throttle (cruise) the pilot still controls mixture.


I did not take pics of 1 or 3 was real real light blue (lean)

Also recieved my Sudco tuning manual, waste of money ugh.
Only breaksdown the peformance version of the smoothbores. Weird thing is Mikuni does not recommend vacumn syncing the round slide carbs. They state the top cap being off creates a huge vacumn leak that throws off syncing.

[Steve]

Had a chance to do a ride yet?

Just wondering if that little bit of vibration is finally gone.

.

[raistian77]

Yes, rode to work and back. Vibration was very minimal and had moved to the 5-6,000 RPM range which I am going to believe is probably normal.

[SqDancerLynn1]

That's great, did you sync them too ???

[081dbx64]

Got mine yesterday.. Will check it out next week. Do you think you will have to re-sync the carbs after color turn?

[posplayr]

Thanks I bought one of these a whiel back but have never used it. Photos are showing up real nice.

[waterman]

Nice pictures, I never thought to take pics when using my colortune. I always had trouble seeing the lean setting since it would generally begin to miss fire or be nearly white in color. I set mine slightly rich at idle, makes my warm up much faster. If you tuned at 3 grand, you may want to check your synch, maybe off since adjusting that rich cylinder out.

[apogeecustom]

Wow I am impressed.

Never paid attention before to treads about color tune. I thought they were about carb tune.

I am now working on convincing myself that "I do" need one afterall.

Does color tune wear out with time?

DP

Mine just came in the mail this past weekend and I just adjusted my mixtures with it. I don't know if it's going to wear out, but some of the parts are very cheaply made. My electrode extension stripped out immediately. Luckily it just jams on and works, but I'm fairly surprised at how cheap it is. Glad I got it though

[Turtleface]

Mine just came in the mail this past weekend and I just adjusted my mixtures with it. I don't know if it's going to wear out, but some of the parts are very cheaply made. My electrode extension stripped out immediately. Luckily it just jams on and works, but I'm fairly surprised at how cheap it is. Glad I got it though

I had problems with my electrode extension as well. Except my problem was a lack of threads, rather than stripping them. Easy enough for me to cut new threads through.

[Steve]

That's great, did you sync them too ???

We sync'ed them Saturday, when I stopped by.

I was hoping the Colortune would have gotten there before I did, but it arrived Monday.

I'm glad that he took the pictures, though. Looks like my jetting suggestions were pretty close.

.

[mighty13d]

maybe I should use mine. only had it for 2- 2 1/2 years.... still in the box. lol

[JEEPRUSTY]

if i had one i would use it.

http://www.youtube.com/watch?v=cy_yaAOKjA8&feature=related

a semi related vid on youtube.

[raistian77]

Nice pictures, I never thought to take pics when using my colortune. I always had trouble seeing the lean setting since it would generally begin to miss fire or be nearly white in color. I set mine slightly rich at idle, makes my warm up much faster. If you tuned at 3 grand, you may want to check your synch, maybe off since adjusting that rich cylinder out.

I set the mixes at idle. However I played with the air pilot screw (VM) at 3,000 RPM to see if it still effected mix and it did.

Colors are a little weird to get used to

Very Rich............Orange
Rich...................Yellow
Slightly Rich........Whiteish
Slightly Rich.........light blue
Correct...............Deep Blue
very slightly lean..Blue
Slightly lean.........lighter blue
lean....................sky blue
very lean.............not color, missfires

[raistian77]

Note:

Dont adjust to color.

Adjust to high idle like Steve and Cliff recommend
then check your color, if it is off then there is something wrong. You have a intake leak or float that is adjusted wrong.

When you rev the engine it should go yellow than down to dark blue
if it dosent then your needle is set wrong or you have the wrong jet installed.

The color tune basically verifies that everything is right.

[posplayr]

Note:

Dont adjust to color.

Adjust to high idle like Steve and Cliff recommend
then check your color, if it is off then there is something wrong. You have a intake leak or float that is adjusted wrong.

When you rev the engine it should go yellow than down to dark blue
if it dosent then your needle is set wrong or you have the wrong jet installed.

The color tune basically verifies that everything is right.

Glad you said that, I stuck my color tune into my 1100 and tried to adjust idle mixture screws . I finally just backout all screws to 2.5 turns and did a quick check at +/- 0.5 turns to see what effect there was on RPM.

Since I have an O2 sensor this is probably not really going to help me much other than confirming by color that all cylinders are correct independently. Considering I can confirm max idle coupled with O2 the color tune is redundant.

Now if you don't have O2 then at least this gives a sanity check in case something is real far off with the plugs.

Talking to Chef last note he color tuned and then got popping so he backed out something like another 1/2 turn.

I have not put mine back together to see if I am popping.