20 Most Recent 2003 Kymco Stryker 125 Questions & Answers

Replacing CDI unit for a power CDI unit and Replacing exhaust for a performance exhaust it will increase the power.

Look and see if you left a wire disconnected when you installed the battery.
Look around the positive pole........

You probably need a new clutch. That can explain why it bogs. The smoke I don't know.

did you replace the whole indictator assemblies or the bulbs and are they l.e.d indicators you have on it now and was it using l.e.d ones originally

Try changing the spark plug first and clean the air filter.

Bad ground. Find the fault and fix it.

Hi Bryan, it does sound like the battery, if it is a 12 Volt system, just connect a set of jumper leads from a 12 Volt battery, another bike car etc. and see if it makes a difference, i think you will find everything works fine with a new battery.

weak spark can indicate bad coil,,,correded wires,,,or grounding of the ignition circut,,in which case you would have No spark,,,simple things first,,,check your wired to the plugs,,some have removable plug caps,,and many times,,corression interferes with strong spark,,,coil testing must be done at a service provider,,,wires can be grounded,,expically if you have dumped the bike and the handle bars have be dissloged somewhat,,,check the kill switch for damage inside..

dat kan je cdi zijn of condesator als je contact punten hebt ik weet niet of er een typ key er op zit m.v.g jasper

if 2 stroke then = all the way in and out 3/4 turn
if 4 stroke then = all the way in and out 2 turns

is the batt at 12v--are connections tite n no corrosion-the same goes for the wiring--is gas circulating to the motor--may need a repair book

Your bike may need new piston rings because of the over revs on the motor.Hope this helps

Replace the magneto/stator, CDI and voltage regulator/rectifier. Usually if one messes up they all go bad.

solenoid needs a diode across it with stripe on positive side.

can be a vacume air lock try open fuel cap to start cold to see if starts?

or sounds to me that the orfice is to small on the cold start port or dirty ...not enough fuel due to your hand choking

other is a air leak between carb to intake valve/port

when engine running spray some WD-40 around intake gaskets to see if rpm picks up if do its leaking

If there is a number on the lock itself, you might be able to get a key punched out.
A couple other things to do, take a 1/4 inch drill bit and drill out the lock, turn with screwdriver, should start right up, second, carefully take apart the bike, getting to the keyguard and remove the lock, then take the lock apart, get it re-keyed..

I would separate the feed wires from the fuse box/ distribution point and measure any current draw in the separate feeds. That will tell me instantly where the fault/leak is.

Normally white smoke is water in the combustion chamber but this is air cooled so either too much fuel, incorrect fuel or burning oil can cause this.

Question edited for clarity and toss in some CAPS. Question moved from Garden category. Fuel delivery issue. See if there is any in the fuel tank. Stuck float in the carb. Blocked jets in the carb. https://www.google.com/search?q=kymco+k+pipe+125cc ..

Question edited for clarity, typos and spelling. Engines only need 3 things to run Fuel, which must be clean and not 2 years old. Compression. A Spark at the right time. One of the above is not there on your ATV. Flywheels don't break. Check the spark plug is clean and correctly gapped. Service Manual

Troubleshooting - KYMCO MXU 450i Service Manual

ManualsLib https://www.manualslib.com > ... > Service manual KYMCO MXU 450i Manual Online: Troubleshooting. Engine won't start • Battery voltage too low • Fuel level too low • Pinched or clogged fuel hose • Faulty ... More here https://www.google.com/search?q=kymco+uxv+450i+won%27t+start ..

Check the fuses on it. Lights are on a fuse. Google make model manual