trail riding w/2stoker

[2003rm250guy]

hi,what kind of effects does riding at low rpms in woods on a 03rm250 have? can this create a rich condition? an cause pinging?

 

[matt-itude]

as an engine warms up it fattens up slightly and the fatter the mixture the less likely it should be to detonate. it shouldnt change it as far as richer or leaner when you change your ridding style unless for instance one type of ridding keeps you on the main jet most of the time and it is the correct size while another style of riding keeps you mostly on the needle or pilot jet and they are a little rich. then the same bike would give you a good color plug after one style of riding and a rich colored plug after the other style of riding you do. It sounds like mostly a jetting issue to me. and tight woods and trails is more typically pilot jet and needle position type ridding unless your crazy or just good. you were asking about detonation is it or does it show sighns of detonation?

 

[Enduro_Nut]

hi,what kind of effects does riding at low rpms in woods on a 03rm250 have? can this create a rich condition? an cause pinging?

Virtually nothing provided you jet correctly and mix oil properly.

 

[2003rm250guy]

thx,umm the plug looks pretty dark/black, with some crusting around the circular top surface

 

[matt-itude]

the crusting is from oil. if its black it could just be you need to lean the needle or air screw out slightly. this is still under the assumption you dont open the trottle all the way very often when trail ridding.so its running mostly on the needle and pilot jet the other thing to keep in mind is while trail ridding you dont hold the throttle pinned for very long so the combustion temps dont get as high and stay there to burn off the plugs electrode as well.