Hey guys. My Lt250r hasnt ran in a while, and when it last ran it was good, but now we got some new mods, reeds, piston ect. Now i heard some where you can tell how your jetting is by what color the spark plug is. The color of the plug on the inside of the engine is a dark brown. Does this mean my Main Needle is too rich? What color should i try to get it to run at? I think i heard a cardbord color? thanks all

 

heres a page to check out. Plug Color Chart

 

Remember all you are setting when you do that is the main jet, you still have to set i think two other stages in the carb (i read that description the other day) My main is perfect but i bog if i nail the gas so i need to do some more dialing. Someone will jump in with the link how to dial it in properly. Remember that a little rich is better than too lean.

Mark

 

i have the same prob.

 

Yea i know about lean and rich, i have 2 Nitro r/c cars. THey got lil carbs and are 2-strokes so im pretty good with the tuning/symthoms. Thanks for the link.

 

That link is GREAT info. Thanks for posting it.

Whats up with the sunday school lesson at the top of it??