Honda CR250 Problem

[alanhealy7@hotmail]

Alright lads, my 00 Honda CR250 is fouling plugs, i put in a new plug and about a half hour later it cut out.

I adjusted the tick over,would that cause it to foul plugs if it was adjusted too high?

What is the stock settings for the carb on the bike?

 

[HAYSHAKER170]

Fouling plugs points to improper jetting almost always. Start with the basics: clean the air filter, check proper fuel/oil mix (32:1), clean the carb, and check jetting. If all that is good and still fouling plugs, then you may have a seal leak and the engine is sucking trans fluid. You can have a leakdown test done to confirm. Also, check you are using the correct plug at the correct gap. I started using NGK Iridium plugs because they seem to be less sensitive to fouling, but not necessary to run correctly if jetted properly. Good luck!

 

[HAYSHAKER170]

by the way, what is "tick over"?

 

[alanhealy7@hotmail]

ill try that bud....tick over is idling speed...

 

[slodad]

My son's '02 CR250 was a plug fouling nightmare until we put in a new top end. After that, problem was gone. It was also easier to jet.

 

[bwood]

If the bike just started doing this, check crank seals, reeds, worn top end and clogged jetting. The stock plug is NGK BR8EG.

 

[tyler_43]

BR8EIX is the Iridium equivilant
Like stated above they are usually a little less prone to fouling... though more expensive.

 

[GenoCR250]

My 06Cr250 did the same thing, went from a B9es to a B8es plug, and a 40:1 premix with 95 octane fuel, air/fuel screw 2.5 turns out. problem sorted.