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Yamaha YZ250 loses power

#1 User is offline   hiho 

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Posted 27 August 2009 - 07:20 PM

Something is up with my bike it carnt keep at steady speed and dies down. i think its getting to much air in but i dont no were to start and my dad wont help me he says my bike my problem (not much spare time)
Any help would be apreciated as i dont really want to send it to the garage :censored: :thumbdown:
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#2 User is offline   luke ferret 

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Posted 27 August 2009 - 07:28 PM

your not leaveing your choke on are you the air fillter mayby fu*ked or you could be running it a bit rich and the plug is oiling up what year is it ??

This post has been edited by luke ferret: 27 August 2009 - 07:30 PM

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#3 User is offline   hiho 

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Posted 27 August 2009 - 09:00 PM

View Postluke ferret, on Aug 27 2009, 08:28 PM, said:

your not leaveing your choke on are you the air fillter mayby fu*ked or you could be running it a bit rich and the plug is oiling up what year is it ??

i got it new in 2007. no problems with the choke but il check the air filter and i doubt its the mix as iv ran all my bikes the same "oil to fuel ratio" and had no problems

the one think im dreading now is i was txting a good mate of mine 1/2 an hour ago and he said the fuel tank might have a a small hole in a that sucks air in or summit :thumbdown:
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#4 User is offline   hiho 

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Posted 27 August 2009 - 09:02 PM

im gona strip it tomorrow and go over everything :angry: :( carnt aford to waist it
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#5 User is offline   ferret_man_09 

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Posted 27 August 2009 - 09:40 PM

disconnect the carb clean the float and float bowl also check that the slide is ok and also cable.
check the air filter pipe and filter for any rips or tears
should solve your problem if not send me a pm i had a similar problem with mine which is also an 07 model
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#6 User is offline   cunninghamb 

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Posted 27 August 2009 - 09:44 PM

theres a screw on the side of the carb, unscrew it it lets more air in, tighten it, it lets less air in, try that it may help!
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#7 User is offline   hiho 

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Posted 28 August 2009 - 06:42 PM

well iv now fitted a new KN air filter( i nicked it of a mate this morning) changed the oil played with that screw on the carb for 5 minutes
And guess what ....Its fixed!! well sortof only had 1/4 an hour onit but it was fine :D . Gona change it for a new KTM tho next month they made me a good deal last week and iv thought it through better trading in a bike thats worth something than tradeing in a bike thats worth nought
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#8 User is offline   nakednutt 

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Posted 02 September 2009 - 06:39 PM

A good way of setting your carbs is too tighten both screws then give them 1 and 1/2 turns out then tweek from there. Also if it comes back then make sure youf fuel is clean and clean the carb like ferret man 09 said
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#9 User is offline   hiho 

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Posted 03 September 2009 - 04:50 PM

View Postnakednutt, on Sep 2 2009, 07:39 PM, said:

A good way of setting your carbs is too tighten both screws then give them 1 and 1/2 turns out then tweek from there. Also if it comes back then make sure youf fuel is clean and clean the carb like ferret man 09 said

dosent matter im saying Bye Bye to it tomorrow and getting this bike http://www.ktm.com/2...F-W.187.20.html
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#10 User is offline   cunninghamb 

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Posted 13 September 2009 - 08:43 PM

You will love the KTM!!!

I was on an 08 KTM 200exc two weeks ago, Bloody Hell! I was in forth gear doing 68mph and I still had two gears to go!

All The Best
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#11 User is offline   fraggle 

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Posted 14 September 2009 - 03:28 PM

ive a 2005 exc 300, fricking beast of a bike, loves enduro
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#12 User is offline   hiho 

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Posted 16 September 2009 - 06:14 PM

KTM was the best choice i have ever made!!!!!!!!! all my mates have kawasakis and yamahas but some are saying theyl get a KTM for there next bike mines brilliant
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#13 User is offline   byron 

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Posted 16 September 2009 - 07:44 PM

View Posthiho, on Sep 16 2009, 07:14 PM, said:

KTM was the best choice i have ever made!!!!!!!!! all my mates have kawasakis and yamahas but some are saying theyl get a KTM for there next bike mines brilliant

ktm..
cheap to service are they. :whistling: :whistling:
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#14 User is offline   RatSnatcher 

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Posted 17 September 2009 - 05:15 AM

Ktm's are cheap to service ;)

And 68mph out of a 200 Exc in 4th dream on, or check your speedo :blink:
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