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.
What makes an engine not start or run?
All engines require three things to start and run: spark, fuel and compression. If any one of these is missing, your engine will not start. The fuel pump is running and delivering normal pressure to the engine
Can you have compression, spark, fuel, and air but not go?
You can have good compression, ignition, and fuel and still not get a 2 cycle to pop off and run. If you have a major air leak into the crankcase, you will never get it to start and may never even get it to pop. Make sure there are no air leaks around anything that attaches to the crankcase and that the top and bottom seal are in place.
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.
What causes a dirt bike to not start?
Spark – This is usually the first thing that everyone suspects when a dirt bike won’t start, but this can also be misleading because a plug will frequently fire out of the cylinder, but under the pressure of being in a cylinder, a spark plug will frequently fail to fire and light the air / fuel mixture.
Why is the gas tank on my motorcycle not starting?
If you know it’s sparking correctly and that there is gas in the tank but it has been sitting for a while, your culprit is probably a clogged fuel injector. You can also manually inspect your fuel injectors. If they look dirty and clogged, that means they need to be cleaned or replaced.
What should I do if my bike won’t crank?
Remove each spark plug, ground it against the engine, see if you have a bright healthy spark. (Don’t crank the engine with spark plug caps not attached to the plugs, or with the plugs not grounded to the engine, you could damage the coils.)
Why does my motorcycle not start with a cracked spark plug?
When a cracked spark plug is installed, the spark will find the least path of resistance through the crack and ground out to your engine block instead of going all the way down to the end of the spark plug and jumping across the gap like it’s supposed to.