Motorcycle Cranks And Backfires But Wont Start
Motorcycle enthusiasts will agree that there is nothing more frustrating than a bike that cranks and backfires but won't start. Not only can it ruin a day of riding, but it can also be a sign of serious underlying problems. In this article, we will explore the possible causes of a motorcycle that cranks and backfires but won't start and provide solutions to get your bike back on the road.
What is a backfire?
A backfire is a loud explosion or popping sound that occurs in the exhaust system of a motorcycle. It happens when fuel ignites in the exhaust system instead of the combustion chamber. Backfires can be caused by various problems, including too much fuel in the combustion chamber, a malfunctioning spark plug, or a faulty exhaust system.
Causes of a motorcycle that cranks and backfires but won't start
There are several reasons why a motorcycle will crank and backfire but won't start. Some of the most common causes include:
1. Faulty spark plugs
Spark plugs are responsible for igniting the fuel in the combustion chamber. If a spark plug is faulty, it can prevent the engine from starting. In some cases, a faulty spark plug can cause the engine to backfire. To fix this problem, replace the spark plugs with new ones.
2. Clogged fuel filter
A clogged fuel filter can prevent the proper amount of fuel from reaching the engine. This can cause the engine to backfire and prevent it from starting. To fix this problem, replace the fuel filter with a new one.
3. Dirty carburetor
A dirty carburetor can prevent fuel from reaching the engine, causing it to backfire and preventing it from starting. To fix this problem, clean the carburetor thoroughly.
4. Low fuel pressure
If the fuel pressure is too low, the engine may not start. This can be caused by a faulty fuel pump or a clogged fuel line. To fix this problem, replace the fuel pump or unclog the fuel line.
5. Faulty ignition coil
The ignition coil is responsible for providing power to the spark plugs. If the ignition coil is faulty, it can prevent the engine from starting. To fix this problem, replace the ignition coil with a new one.
Steps to fix a motorcycle that cranks and backfires but won't start
Now that we know the possible causes of a motorcycle that cranks and backfires but won't start, let's look at the steps to fix the problem.
Step 1: Check the fuel tank
Make sure there is enough fuel in the tank. If the fuel level is low, add more fuel and try starting the engine again.
Step 2: Check the spark plug
Remove the spark plug and check for signs of wear or damage. If the spark plug is faulty, replace it with a new one.
Step 3: Check the fuel filter
Remove the fuel filter and check for signs of clogging. If the fuel filter is clogged, replace it with a new one.
Step 4: Check the carburetor
Remove the carburetor and clean it thoroughly with carburetor cleaner. Make sure all passages are clear and free of debris.
Step 5: Check the fuel pump and fuel line
Check the fuel pump and fuel line for any signs of damage or clogging. If there is damage or clogging, replace the fuel pump or unclog the fuel line.
Step 6: Check the ignition coil
Remove the ignition coil and test it with a multimeter. If the ignition coil is faulty, replace it with a new one.
Conclusion
If your motorcycle cranks and backfires but won't start, there are several possible causes. By following the steps outlined in this article, you can diagnose and fix the problem. Remember to always take safety precautions when working on your motorcycle and consult a professional mechanic if you are unsure about any aspect of the repair process.
