Question about 2003 kawasaki KX 250

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What could be causing a 2001 kawasaki kx 250 to continue burning spark plugs out?

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  • kawasaki Master
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Incorrect jetting
incorrect ignition timing
incorrect plug heat range(could run a 9 or 10)
intake leaks
exhaust leaks
incorrect fuel oil mixture
overheating
is it burning the electrode off or carbon fouling the plug
sorry for the long list, there is probably a few you might discount as you have already checked

Posted on Apr 27, 2010

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2001 Kawasaki KX 250 wiring diagram


Hi, Anonymous for this scenario you will need your service manual, parts fiche, and owners manual if you can't find the best tool you ever bought for your Kawasaki, despair not, for a mere zero $0 you can download another one.
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1 Answer

2004 Kawasaki KX 250 F no compression


Hi, Anonymous and the usual suspects are:
1. Broken or hole burnt through piston due to spark plug heat range to high or pre-ignition due to the ignition timing too far advanced overheated engine caused by a burnt valve or carbon/metal particle embedded in the cylinder head glowing hot causing abnormal combustion timing.
2. Any bent or broken valve head caused by improper adjustment or sticking/seizing in the valve guide.
3. Broken connecting rod due to bottom end failure.
4. Incorrect cam timing due to either installation error or cam chain malfunction or drive gear failure.
5. Spark plug blew out of head due to improper torque or failed threads.
6. Failed compression release valve or blown out like the spark plug scenario.
For more information about your issue and valuable "FREE" downloads that you will need for viewing or printing please click on the blue links below. Good luck and have a wonderful day.
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http://www.mxguy.com/downloads/service_manuals/2004_KX250F_Service-Manual.pdf
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Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/gregg_c0ec1df182c7330e

Jan 13, 2013 | 2004 kawasaki KX 250 F

1 Answer

2003 Kawasaki KX 250 keeps fouling spark plugs


Hi, Nicholaswink and the usual suspects are:
1. The first thing to do if your spark plug has been fouled is to check the air filter. If it's really dirty, that makes it difficult for air to get through to the engine, causing a rich condition. Either clean it thoroughly with some Air Filter Cleaner or buy a new filter. Before you put it back in the air-box, treat with some air filter oil or spray. "WARNING" adding too much oil can also clog up the filter, resulting in another fouled plug.
2. While the gas/oil ratio doesn't equate to what the jetting is, you can still foul plugs, or worse, if the mixture is wrong. Depending on your bike, it's best to look at your owner's manual for the correct ratio. For most 2-stroke motocross bikes, a ratio is 32:1 or 40:1, the gas being 32 or 40, and oil being 1. For those that don't it, it means that for every 128 ounces (one gallon) of gas, you add 4 ounces of 2-stroke oil for a 32:1 ration, or just over 3 ounces for a 40:1 ratio.
If you have too much oil in the mixture (such as 12:1), then you will probably end up fouling the plug because it is more difficult to burn that much oil. Don't try to cut corners with the oil though, because it's very important for your dirt bike's engine. 2-stokes need the oil for lubrication on the cylinder walls, so if you don't have enough (or any for that matter) then the cylinder walls will run dry, causing it to overheat and seize the engine very quickly. So it's very important that you put in the right mixture pre-mix to your 2-stroke gas tank.
Also, 2-strokes have reeds that air and fuel go through into the cylinder, so if they are cracked or broken the bike will not run right. This could cause the plug to foul, so before you go out and buy anything expensive, make sure the reeds are still good.
3. While this usually isn't the main problem, it could be that your spark plug isn't burning hot enough. Having a hotter spark will ignite the fuel stronger, leaving less residual gas/oil in the cylinder that could cause the plug to foul. This "ISN'T" the best choice, but I'd say it's safe to go one plug hotter than stock. Keep an eye on the plug color you're looking for a light tan color anything whiter and you could burn a hole in your piston. Spark plug manufacturers aren't always the same, so make sure you find out how they rate them.
4. Almost every motocross bike comes rich from the factory (especially Honda 2-Strokes when they were being made). It's usually a pretty simple fix, but many riders are too lazy and would rather continue buying plugs instead of spending a few bucks on jets.
5. Piston rings badly worn or broken.
6. Faulty ignition coil low output.
For more information about your question and valuable "FREE" downloads that you will need for viewing or printing please click on the blue links below. Good luck and have a wonderful day.
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https://www.howtomotorcyclerepair.com/images/Kawasaki-KX-125-KX250-Service-Manual-2003-2004-2005-2006-2007-2008.pdf
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Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/gregg_c0ec1df182c7330e

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Hi, Mkenne7 for this scenario you will need your service manual, parts fiche, and owners manual if you can't find the best tool you ever bought for your Kawasaki, despair not, for a mere zero $0 you can download another one.
For more information about your issue and valuable "FREE" downloads that you will need for viewing or printing please click on the blue links below. Good luck and have a wonderful day.
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1 Answer

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Hi, Petertreloar for this scenario you will need your service manual, parts fiche, and owners manual if you can't find the best tool you ever bought for your Kawasaki, despair not, for a mere zero $0 you can download another one.
For more information about your issue and valuable "FREE" downloads that you will need for viewing or printing please click on the blue links below. Good luck and have a wonderful day.
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Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/gregg_c0ec1df182c7330e

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Hi, Foxracing_38 for this scenario you will need your service manual, parts fiche, and owners manual if you can't find the best tool you ever bought for your Kawasaki, despair not, for a mere zero $0 you can download another one.
For more information about your issue and valuable "FREE" downloads that you will need for viewing or printing please click on the blue links below. Good luck and have a wonderful day.
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Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/gregg_c0ec1df182c7330e

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Hi, Chrisncourtn for this scenario you will need your service manual, parts fiche, and owners manual if you can't find the best tool you ever bought for your Kawasaki, despair not, for a mere zero $0 you can download another one.
For more information about your issue and valuable "FREE" downloads that you will need for viewing or printing please click on the blue links below. Good luck and have a wonderful day.
https://thumpertalk.com/forums/topic/787559-2002-kx250-gear-oil
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https://www.howtomotorcyclerepair.com/images/Kawasaki-KX125-KX250-Service-Manual-Repair-1999-2000-2001-2002-99924-1244-04.pdf
OEM Parts for Kawasaki
2001 Kawasaki KX250 Owner Manual

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/gregg_c0ec1df182c7330e


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2 Answers

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possible bad rings allowing excessive oil seep up and wash spark out on next fire. do a compression check, ck for proper spark, and fuel....hope this helps

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1 Answer

2003 kawasaki ninja 250 stalls and bogs


Stalling is usually caused by water on the fuel tank. Drain the carburetor, better... clean it. Blow air on the jets and needles. Drain the main fuel tank and check for water residue (brown)... siphone the fuel back to the tank. assemble and install the carburator and you'll be off to a cleaner burn. Also, make sure that the spark plugs are cleaned.

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