Question about 2003 kawasaki KX 250

1 Answer

Problem with the powerband on my kx250

It starts up fine and runs good at low rpm but when i pin it i lose the powerband and have to let off to get a little of the powerband.

Posted by on

1 Answer

  • Level 1:

    An expert who has achieved level 1.

    Corporal:

    An expert that hasĀ over 10 points.

    Problem Solver:

    An expert who has answered 5 questions.

  • Contributor
  • 9 Answers

Sounds like you need a new power valve in the cylinder. They can go bad and thats how they will act. You have to take the cylinder off to change it. If your that far you might as well put a new piston and ring in it.

Posted on Jan 23, 2009

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

How can I fix it s10 with a low rpm miss 2.2 engine 96 model


check your catalytic converter, it may be plugged up

Mar 01, 2015 | Cars & Trucks

1 Answer

When I start my 1990 Talon TSI runs fine as it warms up runs real rich has no power and boost is very high. At low RPM around 2500 its fine after that all hell brakes lose bogs down and wont go ?


check the air cleaner and replace if necessary. ( low air volume = rich mixture ). Check/clean exhaust system as back pressure may be too high at high rpm's. Check fuel quality and do not use e-mix fuels.

Sep 10, 2014 | 1990 Eagle Talon

1 Answer

My 1989 yz250 wont hit powerband what can I do?


Hi, Jorge for more information about your question and valuable "FREE" downloads that you will need please click on the links below. Good luck and have a nice day.
1999 yz250 not hitting power band
Dirt Rider Magazine
YAMAHA YZ250 LC Owner Service Manual
OEM parts for Yamaha
http://mybikemanuals.com/yamaha/yamaha-yz-owners-manuals

Feb 02, 2014 | Yamaha YZ 250 Motorcycles

1 Answer

Kdx 125 sputters just before the "powerband" kicks in


I used to ride enduro in the 1980s on a KLX 250 :>)

Sounds like you have two issues.

Your spluttering and jolting sounds like a defective Reed Valve, but could also be carburetor float level problems. If it is runs fine when on the power band, then the carb is fine. For the cost, I would replace the reed valve.

http://www.athenaparts.com/eng/sections/view/128/carbon-fiber-reeds-for-intake-reed-valve/page:6

Regarding the electrics, this could be a few things. Check all the earthing points, especially the one on the negative side of the battery. Take the wire off where it grounds to the frame, clean and apply Vaseline which stops corrosion and is electrically conductive. Check all the connectors that you can find. Pull them and make sure they are clean and sealed. Vaseline is good on these too. The specs below confirms it is rectified and regulated. Check the output voltage of the alternator with a test meter. Check the battery is as spec Battery 12v 3Ah and get it stress tested, or just replace it, if it older than 3 or 4 years.

You really need a good workshop manual. I had them for all my scooters and bikes.

Manual
http://www.servicerepairmanualonline.com/859/kawasaki-kdx125-kdx-125sr-125-manual/

Spare Parts List
http://www.cmsnl.com/kawasaki-kdx125-a3-kdx125sr-1992-europe-nr_model11759/partslist/

Specs
http://www.motorbikespecs.net/index.dyn?flag=2&model_id=1914354&make=Kawasaki

Voltage Main Fuse 20A
Ignition CDI electronic advance
Charging System 3 phase AC, 27V@4000rpm. Rectified 14.5@4000rpm
Spark Plugs NGK BR8ES
Bulb-Headlight Battery 12v 3Ah
Ignition Timing 10.5BTDC@1300rpm - 26.5BTDC@3000rpm

Engine Type Liquid Cooled 2 Stroke Reed Valve Straight Single Bore x Stroke 56 x 50.6 mm Compression Ratio
Displacement 124mL
Lubrication System Oil injection
Starting kickstart
Carburation Keihin/PE28
Carburation Main Jet 115
Carburation Idle Jet 48
Pilot Screw Setting 1.5
Red line RPM 10,500rpm


kawasaki KDX 125 Google Search

Apr 02, 2017 | kawasaki KDX 125 Motorcycles

1 Answer

Kx250 98model low pressure on kickstart


complete cylinder compression test. should be approx 120 psi
if low you will have to replace piston rings.

was bike running good before?

Mar 06, 2012 | kawasaki KX 250 Motorcycles

1 Answer

Im having a problem with my 01 civic. its overheating when i raise my rpms, but if i stay low on rpm guage no overheating. then i lose a little coolant and heater starts off fine but loses heat. is this my...


I would start with the thermostat. sounds like it could be in stuck in the closed position, not allowing coolant to circulate the engine. Its very easy to change and inexpensive

Mar 22, 2011 | Honda Civic Cars & Trucks

3 Answers

Powerband


The power band is the point wheneverything is nominal and and peak performance is realized. The air/ fuel ratio , timing, rpms It's mor predominant and noticeable in a motorcycle because of handling and weight All engines have them and these "power bands are really the peak of what s also called the torque curve Band meaning sp[ecific point and duration everything is working together. a gas lawn mower engine is set up to run inside this band. Thats why it doesn't fall on its fsce on the first patch of grass.
A diesel engine has a specific rpm range it has to maintain under load to get nominal horses.. If everything is functioning at nominal, max power is put out. Surprisingly enough it can be felt in all engines if paid attention . That's all it is, no special "bands" or parts. Knowing where the power band(range is makes a big difference on any machine. On an electric motor peak torque is @ let's say 1850 rpms. go faster useless lower toyque. go slower power drops To keep the range of the power band constant. everythinhg needs to be constant, like fuel mix, spark plug condition ,air filter andcarb adjustments.. I had a bike I hate and feared the power band. I would fall into it not paying attenyion and it would litterally crawl out from under me. All it is is that narrow band of peak performance..

Sep 23, 2009 | 2003 Suzuki RM 125

1 Answer

Homelite 2 yard broom 170


You have found the HI and LOW settings. The idle wouls be set by starting and warming the unit up. After warm up, take your screwdriver and turn the LOW screw OUT until the engine starts to lose RPM's. Turn the screw IN until it starts to lose RPM's. Once you have those two points, back the screw about halfway between. You can do the same for the HI setting if you need to. Good luck...Lee

Aug 23, 2009 | Homelite 'Yard Broom' Leaf Blower

Not finding what you are looking for?
2003 kawasaki KX 250 Logo

Related Topics:

439 people viewed this question

Ask a Question

Usually answered in minutes!

Top kawasaki Experts

Arnie Burke
Arnie Burke

Level 3 Expert

4514 Answers

yadayada
yadayada

Level 3 Expert

71856 Answers

chris

Level 2 Expert

232 Answers

Are you a kawasaki Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...