Question about 2004 kawasaki KX 250 F

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My bike has been to the shop twice 4 the same problem and its still there i have no power at low revs even in first gear to the point it stalls . but at high revs the bike goes hard can u help?

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Apart from the obvious check air filter is clean spark plug is good and your pilot jet in carb is all clear form dirt or gummed fuel my next step would be put a tooth or two bigger rear sprocket on it to lower the gear ratio this will give more torque low speed maybe whilst you looking at the sprocket just check that some has not change the front to smaller sprocket it being few years old some one may have set to get more top end speed and sacrificed all the low end??

Posted on May 22, 2011

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Posted on Jan 02, 2017

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I have a 1986 yamaha virago 1100..when I first start the bike and put it into gear it dies out...when I rev it to 7000 rpm it goes into gear and is fine for the day until the next day


Hi, Floyd and the usual suspects are:
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2. Air fuel mixture adjustment too lean.
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4. Faulty accelerator pump.
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REPLACED CLUTCH ON ZR 550 CLUTCH ENGAGES , BUT WHEN FULLY RELEASED BIKE JUDDERS THEN STALLS OUT . TRY TO ADJUST & GEARS WONT ENGAGE .


So if you raise the revs to say about 4000 rpm and let the clutch out does it stall or judder or both will it engage at all and pull away ?

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1 Answer

Loss of power when in gear


Sounds like the carb is frozen or the ignition timing is way out (check distributor and loosen the clamp, turn it slightly with the engine running until it idles and revs up nice) . Reset the ignition timing, if that does not cure it, a carb rebuild is on the cards.

Vote for me if this helps, thanks.

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This is a problem that is very hard to solve on line... It could be human error.. But it could be because of power or carburation issues as well. Best thing I can tell you is to remove the spark plugs and tell me what color they are. Spark plugs are an excelent indicator of the true performance of the engine. Attach pictures of the porcilan and electrode area. This will help me determine if it is error or not.

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Lack of power and low revs


Remove and clean the carbs. Remove and clean the fuel petcock water trap then put everything back together. Try the bike now.
If still bad then take it to the shop and ask for a compression check. You may have some burned valves.

Mar 16, 2009 | 2004 Suzuki VL 125 Intruder LC

1 Answer

Loss of power around 8 -10,000 revs in 3/4 gear


ello m8,,hows things,,clean out the air filter 1st, change all your plugs mr,try that , if nothing u will need to get the carbs balanced to by a bike shop,mechanic,,unless u have carb gauges,,, itl be easier if they do it,, try these 1st m8,, if no joy come back and il go threw step 2 with yuh,,

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