How to Properly Test and Replace Your Spark Plugs

This easy task will be impossible unless you have an appropriate set of automotive tools. Spark plugs are critical to the smooth running of your car. As a bridge for electricity in your engine they are integral to the operation of the engine. When electricity crosses this bridge it triggers a spark that ignites the compressed fuels that makes your car engine start. Without this charge the fuel will not ignite and the cylinder will not power the crank shaft.

The trouble is that this integral component will only last for a short time, a couple of years, so it will need to be changed often in the lifetime of the car. In most cars, changing the spark plug is a fairly quick and simple procedure.

If you do decide to change your spark plug yourself, how do you know when to do it? A good indicator that a plug needs changing is when the engine performance slows down. This is probably the biggest sign that the spark plug is worn out, get confirmation using a spark plug gauge.

If you do need to change the spark plug first take a look at the manufacturer’s advice. You will need to know exactly what spark plug to buy to replace it. Obviously over the years this spark plug may no longer be available so alternatives will be suggested by the manufacturer.

When dealing with your spark plug, you should always protect yourself against the risk of electric shock, wearing rubber gloves when touching things will help. Also avoid leaning against the car and handling stuff while the engine is running.

Being careful not to lean against the car, you must remove the spark plugs while the engine is running. You can use either a ratchet or torque wrench to loosen the spark plug, remembering that anti-clockwise loosens and clockwise tightens. If the engine starts to slow down once you have removed each plug, then you know that the plug is doing its job, because the engine can no longer function as well without it. If the plug needs to be replaced you won’t hear any change in the engine. You will indentify which plugs need to be replaced by removing them one at a time.

You should now remove and test the spark plug wires. You will need to stop the engine to do this, remember to let it cool too. You will then test to see if the plug ignition is working. Any metal surface will indicate if the wire is working, all you need to do is expose it to one. A spark shows that the plug wire is working. Check each wire in the same way.

If you follow this process it will soon become apparent which plugs need to be replaced.

Sarah Haines is an article writer that feels it important to pass on her growing knowledge to others and save money wherever possible in the current economic climate. She recently discovered the money that could be saved when it comes to fixing her own car trouble, and how easy it can be! This procedure is possible using only simple hand tools, like a wrench.