250r just dies?????

[250rMACHINE]

I will be riding and all of a sudden it will start to bog the just dies and i am unable to restart. The i will put a new plug in and it will go again for a little while. Any advice would be great

[DeePa]

what does the plug look like when it cuts out? Probably rich. What year? What carb and jets you running? INFO Please. We cant guess your trailprotrailprotrailprotrailpro.

[bigbadktm]

could be a number of things, but it most definitely sounds like you are fouling your plug...but it could be fuel starvation, the time it sits while you change the plug could be enough time to get fuel to it running again...

let us know how that plug looks when you take it out...is it wet and oily more info needed

[v8280z]

I am going through the same thing on my 84 250R ... I can ride for at least an hour then it suddenly just bogs down and dies. I change the plug and ride for another hour...etc. I am almost certain it is too large of a main jet that is fouling the plugs. I have a smaller size jet to put in this weekend but in the mean time just make sure I have a spare plug.....

[4cfed]

problly fouling out plugs...

my 84 200x would do that but it was random and never fouled a plug, ib be riding and turn just tothe left a little and it could cut out and shut off, but it always restarted

[KASEY]

problly fouling out plugs...

my 84 200x would do that but it was random and never fouled a plug, ib be riding and turn just tothe left a little and it could cut out and shut off, but it always restarted

YOU HAVE WIRING ISSUES ,, its shorting out in the harness somewhere...........

[KASEY]

I am going through the same thing on my 84 250R ... I can ride for at least an hour then it suddenly just bogs down and dies. I change the plug and ride for another hour...etc. I am almost certain it is too large of a main jet that is fouling the plugs. I have a smaller size jet to put in this weekend but in the mean time just make sure I have a spare plug.....

the main jet only controls fuel at 3/4 to full throttle.. so unless your riding at almost full throttle all the hour your riding you have other issues also.........

[NewfieBish]

Id like to see where this post goes as I have the same problem on my 85 250R motor. I wonder about fuel starvation as I use a inline fuel filter, but - jet's is the way I was leaning, Ill keep a watch on this thread!

[4cfed]

YOU HAVE WIRING ISSUES ,, its shorting out in the harness somewhere...........

i know it did, i unwrapped the whole harness from shut off switch down to theframe and couldnt find a break in the wire so i ran new wires from frame to switch and never had a problem again ( no longer own that machine)

[v8280z]

the main jet only controls fuel at 3/4 to full throttle.. so unless your riding at almost full throttle all the hour your riding you have other issues also.........

Yep...full throttle almost always!!

[KASEY]

so you only run full throttle for an hour straight? i am pretty sure i don't believe that. have you ever done a plug chop to see if your jetted to fat??? why waste a pile of plugs ???? and i would like to see where you can ride full throttle for an hour around here without hitting a cactus,,,,,,,,,,

[beets442]

My buddys 84' r runs funny like that too. The mix is right. We'll be riding for a few hours and all of a sudden it dies. Let it cool down a while and it fires right back up. I'm starting to think its electrical too, the only other thing I can guess is the carb was getting too hot cause it only happens in the summer. We've changed carbs(stock,flatside) a couple of times and it still happens:wondering....Beets

[v8280z]

so you only run full throttle for an hour straight? i am pretty sure i don't believe that. have you ever done a plug chop to see if your jetted to fat??? why waste a pile of plugs ???? and i would like to see where you can ride full throttle for an hour around here without hitting a cactus,,,,,,,,,,

That is exactly what I am saying...it is jetted too fat! I'm hoping to fix that this weekend but until I can fix it, if I want to ride I make sure I have and extra plug......

[KASEY]

so none of this makes any sense ,, a jet change takes 3 minutes,,

[bigbadktm]

i use one of those craftsman screwdrivers with the removable tips and it fits the main jet perfectly, takes a minute or 2 thats for sure. is there an on off valve on the gas cap like the 250sx has? i remember not turning that bad boy on and it would die out after a few minutes of riding. maybe you need a new gas cap/vent tube?

[250rMACHINE]

i think the plug is gummy. it is a 86 250r with a keihin carb but i don't know what the jetting is.

[250rMACHINE]

what does the plug look like when it cuts out? Probably rich. What year? What carb and jets you running? INFO Please. We cant guess your trailprotrailprotrailprotrailpro.

i think the plug is gummy. it is a 86 250r with a keihin carb but i don't know what the jetting is.

[ctr86]

I Agree With bigbadktm my 200s didnt have a wnt tube when i bought it from a friend and i would put sticks down in the whole(This was trailprotrailpro i got smart lol i was 10) and it would run for a few minits then die run for a few die then my dad bought me a pice of tubing to put on it and bam fixed never did it again.