What should the compression be on a KX125?
Anything over 120 on compression test is ok. anything under 120 and its time for top end.
How much compression should a 2004 KX125 have?
A: They made seven changes to the 2004 KX125: (1) The compression was raised. For 2004 it’s 8.5 to 11.1:1.
What makes a 2-stroke hard to start?
(1) That you’ve flooded the engine by trying to start it, or that the lower end is loaded up (because you left the gas petcock on). (2) That there is no spark (thus, the plug is wet because the plug never ignited the fuel). Fixing a wet plug (from a flooded engine) is easy.
Why does my Kawasaki KX 125 not start?
Compression, Fuel, Spark – NO START! Ok.. I am having trouble with my 1993 Kawasaki KX 125. It has fuel, plenty of spark, and also good compression. Kick it many times and every now and then it will start.. run for about 3 seconds revving up with the throttle, then it won’t respond to the throttle anymore and completely die out.
Do you need spark, fuel and compression?
An engine actually needs slightly more than spark, fuel and compression to run. It requires a strong enough spark, at the correct time, to ignite the correct air/fuel mix delivered by the carburetor, a properly sealed crankcase (2 stroke), and strong enough compression in the cylinder to allow it to run correctly.
Why does compression feel good on a dirt bike?
Your foot will give an imprecise, inaccurate guess. Seized pistons can feel like compression is good due to the resistance in the cylinder that must be overcome, even though a compression tester will show the compression is too low to run. An engine actually needs slightly more than spark, fuel and compression to run.
Why does my dirt bike have no spark?
Spark plug is new, I have replaced the Coil, CDI, and all wiring. It has a fat blue spark. Carb has been taken apart, every passage cleaned out, float adjusted properly, etc. Topend is not low on compression. Airfilter is clean, and not clogged. Bike won’t start even if I took it off.
Compression, Fuel, Spark – NO START! Ok.. I am having trouble with my 1993 Kawasaki KX 125. It has fuel, plenty of spark, and also good compression. Kick it many times and every now and then it will start.. run for about 3 seconds revving up with the throttle, then it won’t respond to the throttle anymore and completely die out.
An engine actually needs slightly more than spark, fuel and compression to run. It requires a strong enough spark, at the correct time, to ignite the correct air/fuel mix delivered by the carburetor, a properly sealed crankcase (2 stroke), and strong enough compression in the cylinder to allow it to run correctly.
Spark plug is new, I have replaced the Coil, CDI, and all wiring. It has a fat blue spark. Carb has been taken apart, every passage cleaned out, float adjusted properly, etc. Topend is not low on compression. Airfilter is clean, and not clogged. Bike won’t start even if I took it off.
Your foot will give an imprecise, inaccurate guess. Seized pistons can feel like compression is good due to the resistance in the cylinder that must be overcome, even though a compression tester will show the compression is too low to run. An engine actually needs slightly more than spark, fuel and compression to run.