what plug do i use on my 84 aircooled atc250r in the snow?

 

Try the same one you use in the dirt.Is your plug fouling,then your jetting is what you should be checking out.Tell me more about the problem you are having and maybe I can help.

88' 250R many extras

 

Switch to a cooler plug for temps. below 25 degrees.
A cooler plug is always the next size up, lets say you had a b8es if you want a cooler plug you go to a b9es.

2000 SCRAMBLER 400 2X4

SCRAMDADDY400

 

huh??? I may be wrong but last time I checked I would go with a hotter plug in the winter. If you have a service manual for your bike it may say what to run. If not I would not change from what you are already using unless you are experiencing fouling or other running probs. (If it ain't broke don't fix it)

 

This only applies to two strokes.
This is going to sound weird so i'll try to explain it as clear as I can.
In temps. below 25 degrees running a hotter plug can cause spark failure. What happens is the engine is running hotter than the spark plug and the plug heats to the point were it can't spark right and your machine dies, you think you have a fouled plug but its really gotten hot to the point where it won't function.
Running a cooler plug can prevent that cuz its running at or below the engines temperature providing a consistant spark for the cooler weather.
Once temps. reach to above 25 degrees its time to change back to a hotter plug.

I know this is all confusing but I helped Xplor with the same problem he had with his scrambler dying in the winter.

2000 SCRAMBLER 400 2X4

SCRAMDADDY400

 

there ya go you learn something new every day