Spark plugs are an integral part of your vehicles motor as they provide
the much needed spark that ignites the air and fuel mixture within the
cylinders. This continuous ignition is what keeps your car moving on the
If spark plugs are not checked with regular services,
cleaned or changed when necessary, they can cause problems to occur with
the vehicles engine. Below are six signs for when to change your spark plugs
When to change spark plugs:
1. Engine has a rough idle
engine idles when it is a stationary and in this position the engine
normally produces around 1000rpm. The sound the engine gives off is
constant and smooth but if your spark plugs aren’t performing as they
should, your engine will produce a rough and jittery sound while
producing larger vibrations through the car. Not having this checked can
lead to costly damage being done.
2. Having trouble starting your car?
people put their car not starting down to being out of fuel or having a
flat battery. One possibility you may overlook is having bad or worn
spark plugs. If your spark plugs don’t produce the spark needed to get
the vehicle moving, then you’re going nowhere. It is also possible that
faulty spark plugs are causing your battery to drain. If so you need to
have your battery and spark plugs changed as soon as possible.
3. Your engine misfires
your engine misfires it causes the vehicle to halt for a fraction of a
second and then continues it’s usual movement. This means the vehicle
isn’t functioning as smoothly as it should because one or more cylinders
aren’t firing properly, which can also lead to higher amounts of
4. Engine surging
a vehicle sucks in more air than usual in the combustion process it can
cause the vehicle to jerk and then slow down or continually start and
stop, which means the vehicles engine is working inefficiently. This is
also known as engine hesitation and dangerous situation can arise if
this occurs in traffic.
5. High fuel consumption
your spark plugs have deteriorated you’ll notice that your vehicles
fuel economy can decrease by up to 30% due to incomplete combustion. If
you notice you’re having to fill up more often than usual it can be
caused by deteriorating spark plugs. To get back to your vehicle’s
optimum level of fuel consumption all you’ll need to do is have your
spark plugs changed.
6. Lack of acceleration
your vehicle is accelerating poorly it is fairly easy to tell. It feels
as if the vehicle doesn’t want to respond when you put your foot down,
or it does but not instantly as you’ve become accustomed to. It can also
feel as if your vehicle is trying really hard to pull itself along.
This ‘sluggishness’ can be easily fixed by having the vehicle serviced
with a spark plug change.
Source : www.motoringabout.com/when-to-change-spark-plugs