My motorcycle won't start after running it last night. What should I do?

Check the battery

If your motorcycle won't start after you've run it, the first thing you should do is check the battery. Many times, a dead battery is a culprit behind a motorcycle not starting. Here are some common causes of a dead battery:

  • A weak or faulty electrical system
  • A clogged fuel filter
  • Faulty wiring
  • Damaged components like starters, alternators, or batteries

Check the engine

If your motorcycle won't start after running, the first thing you should do is check the engine. If everything looks good and there's no obvious reason why it wouldn't start, try these troubleshooting tips:

  • Check to see if the battery is properly connected. Turn off all accessories, including the headlight and taillight. Reconnect the battery cables, wait a few minutes, then turn on all accessories again. If the bike still doesn't start, it may be due to a dead battery.
  • Make sure that spark is being generated by the plugs. Remove each plug one at a time and check for sparks when you touch both wires together with your thumb. If there are no sparks, replace one of the plugs or connect them in a different way (for example, using an electrical connector).
  • Clean or adjust any clogged fuel injectors or air filters. A dirty filter will reduce engine performance and make starting harder.

Check for gas

If your motorcycle won't start after you've run it, the first thing you should do is check for gas. If there's no gas in the tank, the problem may be with the engine or fuel system. Next, try starting the engine by cranking it with a manual transmission. If that doesn't work, try using your battery to start the bike. Finally, if all of those options fail, there could be something wrong with the ignition switch or wiring. In any case, get help from a mechanic to diagnose and fix the issue.

Check for oil leaks

If your motorcycle won't start after running, one of the first things you should do is check for oil leaks. On a typical engine, oil circulates between the crankcase and the pistons to help them turn. If there's too much oil in either location, the engine will not start. Leaks can come from anywhere on the bike—the headlight, carburetor, intake manifold, or even the frame itself.

To test for an oil leak:

  • Remove all of the fluids and debris that may be blocking your view of any areas near the engine. This includes removing spark plugs and air filters if applicable.
  • Turn off all unnecessary electrical devices, including lights and gauges.
  • Park your bike so that it is facing downhill (or as close to downhill as possible). This will make it easier to see any fluid coming from underneath the bike.
  • Use a flashlight to look for signs of leakage, such as puddles or brownish liquid on top of coolant or around bolts or screws on the bike's chassis. If you find an area where there appears to be a leak, tighten any nuts or screws that may be loose until you no longer see liquid spilling out. If everything looks okay underneath the bike, but you still can't get your motorcycle started, it might be necessary to replace components such as spark plugs or fuel injectors

Check the spark plugs

After riding your motorcycle for a while, it may stop starting after you try to start it. There are several things you can check to determine the problem.

The first thing to do is check the spark plugs. If one or more of them are fouled, the engine won't fire, and the bike will not start. Remove the fouled plug and replace it with a new one. Be sure to use a spark plug gauge to make sure you're replacing the correct size plug.

If that doesn't work, try to kickstarting the engine. Make sure there's plenty of fuel in the tank, then give it a few strong kicks until it starts up. If that still doesn't work, try turning off all of the electrical accessories (lights, horn, etc.), wait five minutes, and then turn them back on one at a time until something works.

In this article, we’ve covered some common causes of motorcycle won’t start after running. By following the tips we’ve provided, you should be able to troubleshoot and fix the issue. Keep in mind that not all of these issues are easy to diagnose and may require a mechanic’s help. However, by following these steps, you should be able to get your motorcycle started again. Thanks for reading!