2 gallons later, whats my plug telling me?
 

Ok, i'm checking the plug once again after reaching around the 2 gallon mark with my stock 5T 26 fuelie. Break in was with .66 gallons of the HPI stuff and now its been Klotz Supertechniplate at 25:1 with non ethanol 91 octane gas. I took pics with and without the flash. The pictures don't show it well, no matter what I did, but it does have a light cappuccino brown color to it all around, which is what im aiming for in accordance to the charts.

http://www.nh-scooters.com/article/a...ersion=enabled

Once again, input please.



http://i100.photobucket.com/albums/m.../5T/spark1.jpg


http://i100.photobucket.com/albums/m.../5T/spark2.jpg

RE: 2 gallons later, whats my plug telling me?
 

this is good freeze. I think you are right on the money. This is a safe zone but you could lean it out a bit more and burn off more of the black gunk and achieve the "brown paper bag" color. I personally like to keep it on the dark side a bit.

RE: 2 gallons later, whats my plug telling me?
 

I'd leave the carb setting right where it is, plug looks good.

RE: 2 gallons later, whats my plug telling me?
 

Plug says : Don't touch anything ;)

RE: 2 gallons later, whats my plug telling me?
 

To me that says, don't touch the needles!!

RE: 2 gallons later, whats my plug telling me?
 

It says put me back in and run me another 2 gallons and don't change me until I sputter or misfire.

RE: 2 gallons later, whats my plug telling me?
 

that chart you posted answered some questions for me.
i've used this color chart for some time now...
no matter what... remember the plug color is different with race or av gas.

http://www.dansmc.com/Spark_Plugs/Sp...s_catalog.html

RE: 2 gallons later, whats my plug telling me?
 

that plug tells me your running the plug a little hot (they dont make platinum or iridium so your fine)... which isnt a bad thing if its a little brown but your burning the electroid.... higher octane fuel will end up doing that.... take a wire brush clean it up regap and put it back in... your settings are fine

RE: 2 gallons later, whats my plug telling me?
 

Of course iridium plugs are available for these engines...from ngk or denso. And by the way, using a wire brush to clean plugs will shorten their service life. You should runa folded piece of 120 grit sandpaper between the two electrodes only.

RE: 2 gallons later, whats my plug telling me?
 

If you are planning on iridum plugs i would recomend a NGK CR8HIX for the summertime and a CR7HIX for the wintertime, though those plugs are a bit higher than the shortend plugs most use with these engines. So make sure you dont have any clearance issues first.
Steelbrushing the plugs is generally not recomended and neither is regapping them if your not 100% sure about what you are doing.

Otherwise the plug looks ok, got some buildup on it so i would prolly lean out a bit more. Or go for a hotter plug. Do you have any engine mods?