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Rock Sam

Rock Sam 5/31/2019

2016 BMW 535i Luxury 6 Cyl 3.00L


When to change spark plugs of Car?

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Partsavatar TR

Partsavatar TR 5/31/2019

Many drivers assume that when their car has trouble starting, there's a problem with the battery. While this certainly could be the case, it's not the only possibility. Faulty spark plugs could be the reason as well! Thespark plugs of a carhave a big job to do. Learn when to change spark plugs by watching for these bad spark plug symptoms.

You should change the spark plug of your car when:

1. Your check engine light comes on.

If a plug starts to fail then the most obvious event should be the check engine light coming on or even flashingas the worn spark plugs can trigger your check engine light to come on.This can cause your engine to misfire and your check engine light to pop on. A flashing engine light could mean that potentially catastrophic misfires are taking place.

It's best to replace spark plugs as part of regular maintenance based on manufacturer's car manual. You can save money with this by maintaining it properly instead of driving with misfiring spark plugs which could put undue stress on your car's catalytic converter.

Symptoms of misfiring spark plugs include rough idling, uneven power when accelerating, and an increase in exhaust emissions. By checking the engine light of your car you can check number of things, not just a spark plug problem.

2. Your car has trouble starting.

The spark plugs of the car have one of the most important jobswhich is to provide the spark that powers the engine! Worn out spark plugs have a harder time to provide the spark that actually powers your engine. If your car stalls when you turn it on, there could be a problem with spark plugs. The battery is most likely the culprit if your car won't start at all.

3. Gas tank filled more often.

If your spark plugs are near to damage then they'll take it out on your gas mileage. Worn out spark plugs of car can increase your vehicle's fuel consumption because they won't effectively burn the fuel that goes into the engine.In general, keeping your car tuned up can work wonders for your fuel efficiency.

4. The engine idles roughly.

Typically (hopefully!) your engine probably purrs like a kitten, but turn down your music and take a listen. When you notice the engine of vehicle is making a rattling, pinging, or knock-like noise, your spark plugs might be to blame.

5. Your car won't accelerate quickly.

You're probably pretty familiar with how your vehicle handles and drives. If you notice that your car isn't as responsive as normal, particularly when you're trying to accelerate, this could be traced back to worn spark plugs. It might be time to have them replaced-no one likes driving a sluggish, fuel-guzzling car.


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