Did a plug chop. How does it look?

[Uf21]

So I did a plug chop while at my riding spot on sunday. How do they look?

There's also a weird marking on both plugs on one side.

 

First plug:

 

 

 

 

 

 

 

SECOND PLUG:

 

[Uf21]

Anyone?

[joey83]

I run mine a little more rich

[VoOK]

Looks lean to me

[pickerg1]

Lean IMO.  I'd fatten her up and see how she responds.

Edited August 6, 2013 by pickerg1

[Colby]

little timing advance wouldnt hurt either

[Uf21]

What should I go up on? Mains?

 

Also those marks on both plugs, what do they mean?

[special06shee]

When performing a plug chop you are only tuning the mains. Bump up 2-3 jet sizes.

[Uf21]

ok, is that very lean or border line. I'll go up 2 sizes.

 

Also does anyone know what those weird marks are?

[Uf21]

ok, is that very lean or border line. I'll go up 2 sizes.

 

Also does anyone know what those weird marks are?

So anyone know what those swirl marks mean?

[registered user]

not sure what they meen but ive seen em on my plugs. i wouldnt worry about it

[jayhawkatv]

27.5 pilots are a good place to start also

[RagunCajun]

What should I go up on? Mains?

 

 

Of course. A plug chop is Main jet. Id go 3 sizes more(then try the chop again). I did mine as recommended then when it was good, i went up one more richer. Bike ran perfect for over 3 years.

Edited September 5, 2013 by RagunCajun

[Uf21]

not sure what they meen but ive seen em on my plugs. i wouldnt worry about it

 

ok thanks

 

 

27.5 pilots are a good place to start also

 

It already has 27.5 pilots

 

Of course. A plug chop is Main jet. Id go 3 sizes more(then try the chop again). I did mine as recommended then when it was good, i went up one more richer. Bike ran perfect for over 3 years.

I'll try going up 2 sizes first. What brand jets do I get for stock carbs?

[67banshee01]

Same as your carbs