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Check Out The Main Reasons Why Your Motorcycle Won’t Start And How To Solve Common Problems Like Fuel, Battery, And Spark Plugs
Nothing is more frustrating than trying to start your bike and realizing it isn’t responding. You turn the key, press the start button and… nothing.
Whether the engine isn’t firing or the bike is completely dead, the situation can leave you at a loss for what to do.
The reasons for this problem can be various, but fortunately, many of them are common and can be addressed and fixed in simple ways.
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In this article, we will explore the most frequent reasons why a motorcycle might not start, as well as offer practical solutions you can try before getting too panicked.
Check The Fuel In The Motorcycle
The first thing to check, and often overlooked, is the fuel level. It may seem obvious, but many starting problems relate to an empty or nearly empty tank.
Your lights are on and the dashboard lights up, but the engine doesn’t respond, take a look at the fuel level. Refilling the tank may be all you need to get back on the road.
However, if the tank is full and the bike still won’t start, the issue may lie with the fuel or the fuel system.
Over time, fuel can go bad, especially if it has been in the tank for more than 30 days. Old fuel can cause combustion issues and prevent the engine from running properly.
Additionally, check if the fuel filter is clogged. Debris and contaminants can block the fuel flow, leaving the engine starved.
Inspect the fuel lines for cracks or kinks that may restrict flow. If necessary, replace damaged lines.
For motorcycles with fuel injection, listen for the fuel pump when you turn the key. If you don’t hear the pump, a burnt wiring may be an issue.
The Battery
Another common concern behind starting failure is the battery. If you don’t hear anything when pressing the start button, the battery is likely dead.
In some cases, a dead battery can be recharged, but if it is truly lifeless, then it will need to be replaced.
Start by checking the battery terminals. If there is corrosion or dirt, clean them. If the battery looks good, try turning on the lights.
If the lights are dim or don’t come on, it’s a clear sign the battery is having issues. A simple click test can also indicate the battery’s state.
When you press the starter and hear a strong click, the battery is likely too weak. If you hear nothing, the battery needs to be boosted.
Use a multimeter to measure the battery voltage. A healthy battery should read at least 12.06 volts. If the reading is lower than that, it’s time to replace the battery.
Also, remember to check the alternator. If the alternator isn’t working properly, it may not be charging the battery or causing ongoing failures.
Spark Plugs
If your motorcycle’s engine won’t start, even with good fuel and battery, it may be that the spark plugs are faulty. They are responsible for igniting the air-fuel mixture in the engine, and when they fail, the engine simply won’t start.
Inspect the spark plugs for carbon buildup, oil, or dirt. If they are very dirty, try cleaning them.
If the spark plugs are corroded or damaged, the only solution is to replace them. Additionally, it’s important to check the gap between the plugs.
If the gap is incorrect, the spark generated may be weak or insufficient for the engine to start. Faulty spark plugs can cause other issues beyond making starting difficult.
They can reduce fuel efficiency, cause engine misfires, decrease power, and affect throttle response. If you notice any of these signs, the spark plugs will likely need to be replaced.
What To Do If Your Motorcycle Won’t Start
Before you start dismantling your bike and looking for more complex problems, it’s important to check the basics. Start with the fuel. Check if there is enough gasoline and if the fuel is fresh. If the fuel is old, drain and refill the tank.
Check if the battery needs to be charged or replaced. If the battery is good, inspect the safety switch, the kickstand, and the sidestand.
If the bike still won’t start, remove the spark plugs and check for faults. If not, inspect the fuel system for any possible blockages or obstructions.
With patience and careful diagnosis, you can troubleshoot motorcycle starting issues without immediately resorting to a mechanic.
Often, the problem can be resolved with simple adjustments and replacements. But if the issue persists, it may be time to seek professional help.
Information from Slashgear.
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