No spark 4 stroke kx 250 2005 - kawasaki Motorcycles

If I am not mistaken,,, the KLX is a 4 stroke motor and the KX is a two stroke motor....>>? So, NO!!!!!!

If this is a 2 stroke engine it does not require an oil change.
If this is a 4 stroke engine most motorcycle manufacturers recommend 10W40 oil and an engine that size should require approximately 3 QTS of oil. However, personally I have always used 20W50 in all of my 4 strke motorcycle engines. You also mentioned a problem what is the problem with the KX 125?

Make sure the choke is fully disengaged while riding. Is it two stroke? If so, make sure fuel/oil mixture is not too rich. If four stroke, try a colder plug. If four stroke, make sure valves are adjusted properly.

32 to 1 is the standard mix. That is 4 ounces two stroke ENGINE oil per gallon. The brand doesn't really matter. Don't use MOTOR oil in the gas. The stock plug is NGK brand, R6918B-9. I would suggest a hotter plug, R7376-8. The last digit is the heat range. The lower the number, the hotter the plug.

The standard mix is 4 ounces of two stroke engine oil per gallon of gas.

sounds like your coil is packing in try the coil on another bike buddy if this works on another nike get back to me

Get a new NGK spark plug one heat range hotter than stock. Be sure the fuel mix is 32/1 using two stroke engine oil ( not motor oil ). A 32/1 mixture equals 4 ounces oil to 1 gallon of gas. Remove the cylinder head and de-carbon the top of the piston and head.

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i know you have to change the oil and oil filter but how often and is that the only thing different from maintance on a 2-stroke?. Im getting an 04 kx 250f any help would be great!The two most important aspects of four-stroke maintenance are frequent oil/filter changes and regular valve clearance checks/adjustments. And some four-strokes (RMZ450 for example) have a manual timing chain tensioner that must be regularly checked/adjusted. Everything else is exactly like a two-stroke.,,,