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 to do when spark plug wont start?

If you suspect the spark plug cap, pull the lead wire out of the cap and look at the end of the wire. If the core wire is not visible or looks burned, cut 1/4-inch off the end of the wire and reinsert it into the spark plug cap (using the proper procedure, either prong or thread-in lead).

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.

Can a push start bike start with low compression?

Push starting a bike will run with low compression. It needs to be 100PSI + to be able to kick start. If you test it and get a reading above 100psi then the pilot jet is plugged. You may be getting spark yes, but check your timing and make sure its spot on. it may have came loose.

You can get all the fuel you need with a fat blue spark but with little to no compression it still won’t run. Push starting a bike will run with low compression. It needs to be 100PSI + to be able to kick start. If you test it and get a reading above 100psi then the pilot jet is plugged.

What to do when your car won’t start?

(1) Check the metal cap on top of the spark plug and make sure it is tight. Give it a gentle twist with a pair of pliers if it isn’t. (2) Make sure that the spark plug lead wire is solidly connected to the spark plug cap. If you suspect the spark plug cap, pull the lead wire out of the cap and look at the end of the wire.

How to know if your engine has no spark?

First Confirm Your Engine Has No Spark. 1 Disable the fuel system by removing the fuel pump fuse or relay. 2 Insert a spark plug tester into the plug boot and ground it on a piece of metal on the engine. 3 Finally, Have someone crank the engine and watch for spark.

What to do if there is no spark or fuel?

If there is no spark or fuel, then the first thing I would do is check the vehicle’s fuses and relays, particularly the EFI main and ignition relays. It may be possible that one of these components has failed and is cutting off power to the vehicle’s ignition and fuel systems.

What causes the fuel pump to not start?

The fuel pump is running and delivering normal pressure to the engine But, with all that working your engine still will not start. So, the most likely cause, is that the fuel injectors are probably not opening. The (PCM) uses the trigger signal from the crankshaft position sensor; and/or camshaft position sensor to pulse the injectors.

What happens when a spark plug is misfiring?

Misfiring will cause increased exhaust emissions, reduced fuel economy and reduced engine power. A single misfiring spark plug can dump enough raw fuel into the exhaust; to overheat and damage the catalytic converter. Spark plug problems might cause your engine to consume more fuel than usual.

Can a worn spark plug cause a no start condition?

Which can be difficult for a worn spark plug to ignite. Resulting in hard starting, long cranking, or a no-start condition. For many people, the check engine light might be the only sign; your engine is having spark plug problems. The (ECM) is far more sensitive than many drivers and can detect a single cylinder misfire.

What was the main jetting on a 2006 Kawasaki KX250?

A: It was a good thing that we started testing the 2006 KX250 in the heat of summer. If it had been winter, with more oxygen in the cooler air, the KX would have pinged itself to death. The jetting is lean, even for normally rich 100-degree weather. We replaced the 160 main with a bigger 162–and could have gone richer.

What makes a Kawasaki KX250 better for motocross?

The $185 link also changes the leverage ratio to hold the KX250 shock higher in its stroke longer. Conversely, by stiffening the rising rate, the KX250’s rear suspension feels softer. In action, it feels about one spring rate softer (which is a good thing).

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.

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.

How to fix spark, gas, compression, ignition?

Then change it again, they are cheap! If you have fuel, compression and ignition…….at the right time……it has to run, it has no option! As Fish said check the flywheel key and the air gap between the coil and magnet if the above doesn’t solve the problem.

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