Question about 2003 Gas Gas EC 250

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I have a gas gas ec 250 an when it comes to the powerband it just splutters out has any1 got a clue wat could be up we it

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Power valve sticking, or gummed up. Make sure air filter is clean.
Look to see that your spark plug is burning brown, white is too lean, and black is too rich. (Too much fuel)

Posted on Jul 30, 2009

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Posted on Jan 02, 2017

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1 Answer

Gas gas trials starts but splutters and loses power


Possibly Washed The Rings Running With No Oil Mix. If Compression Is Less Than 80 P.S.I. It Will Not Run. The Mix Should Be 24 To 1.( 3.5 Ounces Of Oil To 1 Gal. Of Fuel). Hope Its Not Too Late .

Apr 23, 2013 | 1998 Gas Gas EC 250

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

Wiring diagram ec 250 gas gas


CHECK YOUR FLASHER RELAY AND ALL EARTHS

Apr 05, 2012 | 2001 Gas Gas EC 250

1 Answer

1986 Yamaha yz 250 won't rev to powerband


Hi, Patrick and the usual suspects are:
1. Severely drained or faulty battery.
2. Faulty regulator/rectifier or high output coil.
3. Faulty power valve, solenoid or installation.
4. Clogged air filter or exhaust.
5. Cracked or incorrect float level.
6. Float needle is not seating.
7. Faulty reed valve.
For more information about your issue 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
2001 YZ 250 Won Hit Powerband Yamaha 2 Stroke
YAMAHA YZ250 LC Owner Service Manual
OEM parts for Yamaha
http://mybikemanuals.com/yamaha/yamaha-yz-owners-manuals

Oct 13, 2011 | 2003 Yamaha YZ 250

1 Answer

Only has 4 gears


It is GasGas MC 250 trasmition. I have the same in EC engine.

Oct 27, 2010 | 1998 Gas Gas EC 250

1 Answer

WERE DO I POUR OIL IN TO ENGINE AFTER A OIL CHANGE on a gas gas ec 250 2003 PLEASE BUD IM LOST NO THUMB SCREW IN SIGHT REGARDS BOB


see manual

http://safemanuals.com/414159.php?ID=521613&k=02b61348a93c5b236cbfc32d09ec5872&q=GAS%20GAS%20EC%20250

page 2-03

it appears to be a torx bolt above the chain guard.

Let me know if this helps.

Mar 10, 2010 | 2003 Gas Gas EC 250

1 Answer

Missing goughing and spluttering


THis sounds like water in the gas. Condensation inside the gas tank is where the water comes from. Remove the drain plug at the bottom of the float bowl to drain the bowl. Some bikes have a small bowl as part of the gas valve assembly. Remove that bowl and dump it out also.

Oct 18, 2009 | 2006 Suzuki ST 250 E

3 Answers

Bike boggs down no powerband rm 250


i have a 92 rm 250 an i just had it fully rebuilt an it laggs in power band an splutters an feels guttles

Oct 09, 2009 | 2003 Suzuki RM 250

1 Answer

The motor runs but wont powerband? (yz250)


clean out the entire airbox along with really clean out the air filter, use gas to clean the filter then rinse it out with warm water.iv been doing it for years, dont let anyone tell u otherwise, check the reeds, replace if needed, clean the powervalve. clean the carb. i dont no wat else could be a matter with the bike, unless its in the cylinder like no compression of broken or worn piston rings, who noes. get curious check **** out that away u dont have to waste ur time askin us. u no

Jan 25, 2009 | 2003 Yamaha YZ 250

1 Answer

Problem with the powerband on my kx250


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.

Jan 23, 2009 | 2003 kawasaki KX 250

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