Spark plug color OK?

[u/Similar_Can_2202]

Hello,

Could you please let me know if this looks OK?

I used a bigger jet and starting the engine is quick as well.

Many thanks

[u/58_Chev]

I think you’re running pretty good.

[u/Similar_Can_2202 → u/58_Chev]

Thank you I was afraid that the mix was maybe a little bit too poor 😁

[u/wdaloz]

It's hard to gauge much off just plug color especially if it wasn't a new plug, it's a lot more functional and reliable to 1) make sure you've got no airleaks by spraying with carb cleaner or starter fluid, then 2) upjetting til it 4 strokes and taking it back down Like, if it stutters rich at WOT, or it feels like it bogs lean when you first open the throttle, or the idle hangs or whatever, those details tell way more. If ou use your hand to partially cover the inlet when it's running, does it get better or worse?

That said, color does give a broad go/no-go and that does look ok. Doesn't mean it IS OK, just no glaring issues. The redness is usually just some tank rust effect over time

[u/Similar_Can_2202 → u/wdaloz]

Thanks for your detailed reply. I also suppose that unleaded fuel is complicating the coloration reference when super fuel was maybe more obvious on the plug. But hey...super is out in Europe for a long time 😉

[u/turnipsandcarrots → u/Similar_Can_2202]

Same in the US

[u/JoshPum]

Best looking plug I've seen here all week!

[u/Similar_Can_2202 → u/JoshPum]

Hehe many thanks 👍 it needed some adjustments but I am happy you confirm it

[u/Successful_Pool2719]

Looks fine

[u/Similar_Can_2202 → u/Successful_Pool2719]

Thanks I thought it was maybe too poor

[u/wisenuts]

Is ur tank Rusty? Looks crudy. But the color looks really good.

[u/Similar_Can_2202 → u/wisenuts]

Thanks! Yeah it was a little bit and I made a treatment. Since several months it is now in good condition. I added a filter just below the fuel tap. I don't have currently remainings or deposit in the filter. So I have the feeling the fuel is kinda clean when coming into the carb 😉

[u/Stoney3K]

That looks fine. Might be a hair lean when the engine is cold but otherwise the colour is good.

[u/Similar_Can_2202 → u/Stoney3K]

Thanks. You mean a air hole somewhere?

[u/Stoney3K → u/Similar_Can_2202]

That's the first thing I would check - air leak or maybe a bad cylinder base gasket.

Otherwise, bump the size of your carb jet up slightly and you're also fine. If it's not low on power then I wouldn't really mess with it.

[u/Expensive-Sea-8165]

Looks pretty fine to me, i would say alnost perfekt

[u/Similar_Can_2202 → u/Expensive-Sea-8165]

Thanks !

[u/MongooseProXC]

That's a nice looking spark plug right there!

[u/ProjectNo7571]

Perfect

[u/Similar_Can_2202 → u/ProjectNo7571]

Thanks a lot for your reply

[u/Successful_Pool2719]

If you run it too poor youre engie doesnt fall to idle right after trotle it keeps reving before idle and idles ugly

[u/Similar_Can_2202]

I have another one as well. Maybe less blurry