Gunson Color Tune

Beags64 · May 12, 2019

Stumbled across this on the YouTube, never heard of such. Anyone ever seen or tried one? Wondering if it's just a big shot of snake oil or if it actually works.
Might be interesting just to see.

arcticXS · May 12, 2019

It may work for adjusting idle mixture, but hardly useful when riding. I would save the money, and save up for a wideband lambda setup instead.

DaveO · May 12, 2019

Blimey. That's a blast from the past. I didn't know they still made them. Last seen in the 70's. (see above). What @arcticXS says.

grizld1 · May 12, 2019

I bought a Colortune plug years ago just to see if the gizmo was as useless as I figured it would be. It was. I gave it away, wouldn't take money for something I knew to be worthless.

Beags64 · May 12, 2019

My first thought was there is no way that "see-through" plug gizmo would fire the same as a regular plug would. Yeah, you might be able to see the pretty colors but not going to be anything like what's really happening inside the cylinder at ignition.

TwoManyXS1Bs · May 13, 2019

Back in the '70s, one of our mechanics got one of those. Interesting and fun to watch. However, since we all already knew how to tune by ear, smell, feel; it simply added precious time to doing a tuneup, or configuring a new engine/carb setup. Probably useful to someone learning about carb tuning...

Grimly · May 25, 2019

And yet, there are people out there who know how to use them.
Funny, that.

Ceed Klumper · May 25, 2019

I used these once to tune the dual carburetors on my '71 Spitfire. It was a perfect way to adjust the mixture and I was very pleased with the result. So much so that I recently bought another set to tune my '69 Mercedes. Highly recommended.

TwoManyXS1Bs · May 25, 2019

I kinda view it like musical instrument tuning.

Some folks tune by tuning fork or the electronic tuner.

Some folks tune by ear.

Some folks (like me) shouldn't tune by ear, and use the tuner...

peanut · May 26, 2019

well if its fessin up time I admit I bought one some years back to see if it was useful but never got around to trying it out.

Like 2M I have always used my ears eyes nose and other simple tests for classic 50s 60s and 70s vehicles

Gunson Color Tune

Beags64

XS650 Guru

arcticXS

XS650 Guru

DaveO

XS650 Addict

grizld1

Grumpy old man

Beags64

XS650 Guru

TwoManyXS1Bs

BBQ Hunter

Grimly

XS650 Junkie

Ceed Klumper

XS650 Enthusiast

TwoManyXS1Bs

BBQ Hunter

peanut

XS650 enthusiast & inveterate tinkerer

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