Engine Starting Trouble? How To Fix It Using Sanitizer?

Engine Starting Trouble

Engine Starting Trouble After Lock-down? Try This Method

Parked your vehicle for a prolonged time due to the coronavirus lock-down, and it is giving you engine starting trouble? Then, try this simple trick at your home. Due to prolonged inactivity, the automobile engine fails to start quickly or does not start at all. There are many reasons for this. Let’s look at some of the possible causes and solutions in this article.

Battery Indicator Light
Battery Indicator Light

Always Check The Battery

When you try to start your vehicle, it either doesn’t crank or start on its own. Read here on why the engine does not start. Firstly, see if the vehicle has sufficient fuel & if it is cranking or not. Then, when you switch on the ignition, the lights on the meter should turn ‘ON.’ Especially, the battery indicator light should turn ON, and it lights bright or stays STRONG, indicating that the battery is in healthy condition. Alternatively, you can use a multi-meter to check the battery voltage. It should be above 10 volts minimum to provide enough power to crank the engine. Also, check the engine oil & coolant level is upto the mark as specified by the manufacturer.

If the battery indicator light is NOT strong or flickering, it means that the battery is very low. In this case, DO NOT attempt to crank the engine as this will create excessive load on the battery. If so, you will need to charge your battery through external means such as a battery charger or a jump start. In addition, you will need to take the help of a local mechanic or service center to charge the battery.

Engine Starting Trouble: Scenario 1

If the battery indicator light is strong and the battery voltage shows above 10 volts, then try to crank the engine. In addition, you might need to turn ‘ON’ the choke to supply a rich air-fuel mixture in case of a carburetor fuel system in your vehicle. In the case of a fuel injection system, you just need to crank the engine. Try to crank the engine a few times to see if it starts on its own. If it does, it’s well and good. However, you must run it idle for at least 10-15 minutes before you can take the vehicle to drive. This 15 minutes period is necessary to ensure that engine support systems such as the cooling and lubrication systems are up and running smoothly.

Now, the battery indicator light on the dash should go ‘OFF.’ This means that the battery charging system is working correctly. Then, see on the dash if any other warning lights such as the ‘low engine oil pressure‘ or ‘high engine temperature‘ turned ‘ON.’ If so, immediately turn ‘OFF’ the engine and call for professional help or a mechanic to look into the issue. After 10-15 minutes, the engine fan will turn ‘ON,’ indicating that the engine has reached its operating temperature. If NO warning lights are showing on the dash, then you can safely drive off your vehicle.

Engine Starting Trouble: Scenario 2

If you can crank the engine, the battery is OK. Now, try to start the engine by cranking it. If it shows the engine starting trouble after cranking for a while, it indicates that there is some issue with either the fuel system or ignition system. In most cases, the problem could be the fuel system. Since the vehicle was inactive for a long time, the fuel in the system has dried up, or its quality has degraded. The fuel quality is NOT upto the mark. The fuel starts to lose its quality after three weeks of filling up. So, this might be the case.

Remove Spark Plugs

If your vehicle is inactive, there is NO reason why the ignition system goes wrong/faulty. However, this depends upon the age of the vehicle and/or if you did any repairs previously. So, if the vehicle still has engine starting trouble, you will need to proceed to further diagnostics. It includes whether or NOT the engine is getting a good spark. Then, remove one of the lugs with the spark plug cable attached to it and crank the engine. (For the correct procedure of removing the spark plug, please refer to the ‘Owners Service Manual’ of your vehicle. Manufacturers supply it with each vehicle or you can use the Internet.) Next, you will see a spark generating at the tip of the spark plug. If you see the spark, the ignition system is fine. Then, focus on the fuel system.

Remove Spark Plug
Remove Spark Plug

Use This Trick

This condition indicates that there is NOT enough air-fuel mixture supply to the engine. It could be because the engine was inactive for a prolonged time, and fuel dried up. Now, put 4-5 drops of hand sanitizer containing 70% alcohol into the spark plug hole on the cylinder head, as shown in the picture below. (You can also put a few drops of engine oil, petrol, or any alcoholic liquid. It will also work.)

Now, plug the spark plug back in and hand-tighten it fully. Make sure that you have tightened the spark plug fully and correctly. Failing to do so will result in engine stalling/not starting at all. Now, wipe off any excess sanitizer and put it back on the spark plug cable. Note: Put only five drops of sanitizer or petrol. Don’t put more drops as it is NOT necessary, and it won’t be easy to start the engine.

Put 4-5 drops of hand sanitizer in the spark plug hole to fix engine starting trouble
Put 4-5 drops of hand sanitizer in the spark plug hole
Wipe out any spilled liquid
Wipeout any spilled liquid
Tighten the spark plug firmly to fix engine starting trouble
Tighten the spark plug firmly


A spark plug is critical as it causes engine starting trouble. It ignites the air-fuel charge in the combustion chamber. It provides the electrodes very high voltage of around 20,000 volts and produces a spark to burn the air-fuel mixture. Now, try to start the engine by cranking it. But, before cranking, put the choke ‘ON’ again and then crank the engine.

Whoa..! The engine will start immediately as the alcohol-based hand sanitizer is highly flammable and catches fire immediately. As the engine starts, keep it running idle for 10-15 minutes. Don’t raise it or push the accelerator as it could damage the engine. You can use this method for any petrol engine. However, this process becomes a bit lengthy for multi-cylinder engines as it involves more components.


Extra Note: Spark Plug Gap

The electrical resistance of the spark plug depends on the distance between the electrodes. This distance is known as the spark plug gap. You need to adjust this gap by bending the ground electrode according to the manufacturer’s specifications. Too much or too small a gap decreases the ignition system’s efficiency and develops engine starting trouble. It, in turn, causes loss of engine power and fuel efficiency.

Watch here how to change a spark plug on a motorcycle:

Read More: Why adjust Spark plug gap?>>

Home » Articles » Engine Starting Trouble? How To Fix It Using Sanitizer?
CarBikeTech Team Avatar
CarBikeTech is a technical blog. CarBikeTech Team members have experience of over 20 years in the automobile field. CarBikeTech Team regularly publishes specific technical articles on automotive technology.