5 Signs of Bad Spark Plugs

5 Signs You Need New Spark Plugs
1. Engine Misfires
A misfiring engine is a big sign that one or more of your spark plugs are not firing properly. A misfire may sound like a sputtering sound or feel like a sudden loss of power or violent shaking. Consistent misfiring may result in poor vehicle performance, low fuel economy, higher exhaust emissions, rough idling, and a damaged catalytic converter.

2. Poor Gas Mileage
When spark plugs are working correctly, they burn fuel efficiently in your engine. If you notice you are getting less mileage per tank of gas, deteriorated spark plugs may be the cause. As spark plugs age, the space between the plug electrodes can expand or decrease. This causes the spark plugs to not fire or fire erratically, wasting fuel and increasing emissions.

3. Trouble Starting
Dirty, damaged or worn-out spark plugs make it difficult to deliver the spark needed to start your vehicle’s engine, especially in cold weather. This may result in a jerky start or the vehicle cranking for a long time before starting. If this continues over time, it can damage your engine and starter and drain your car battery.

4. Slow Acceleration
If you press down on your gas pedal and the vehicle doesn’t react as quickly as usual, your spark plugs could be causing a delayed response. However, this could also be caused by other factors, such as dirty fuel injectors, faulty oxygen sensors or a bad fuel pump. So make sure to get your vehicle diagnosed by a qualified technician before paying for new spark plugs.

5. Rough Idling
Keep your ears open for any rattling, pinging or knocking sounds—these are another bad spark plug symptom. If your vehicle’s engine is making any unusual sounds or vibrations while idling, your vehicle’s spark plugs may not be functioning properly to keep the engine running smooth.

[cpncreditking]

2011 Ford Expedition 120k miles: Rough idol, hesitation, Shaking, knocking & poor acceleration…Change camshaft sensor, change all 8 spark plugs (Never been changed), put fuel injection cleaner in gas tank…Runs powerfull and idles very smooth now.

[ronychowdhury]

Hi i have vauxhall astra 1.4.my car misfire to start in the morning when ingine is cold some time its starts couple of try but somtimes battery goes dead then i need jump starter to start.is that bcz of plug? And dos OBD shows the issue?

[kaudzropiha]

Mine Cuts out of power n makes a tick in the motor every time foots flat or when in low revs n tryna throttle

[talelbaz]

How often to change plugs in a Chevrolet Cruze 1.4 Turbo

[borg]

Nah! I've only changed my plugs 1 time in my kia sportage with 315, 000 miles on it so far. They will last a long time for sure.

[kekasxxx]

R.p.m goes up and down. Is it possible to be a spark issue?

[pokedude]

Often your vehicles "recommended maintenance interval" is based on ideal driving scenarios. Basically it assumes you are driving your car only in perfect conditions, never in stop start traffic, never in extreme cold or heat and it also assumes the engine has been perfectly maintained. It may say you can make it 100k on a set of plugs but I just pulled mine out at 65k after noticing a stuttering hesitation when pressing the gas and a couple times of the starter cranking for 4 or 5 seconds before starting. Pulled the plugs out and they're caked in black crud and oil on the ends, still working but definitely at the end of their life. They're cheap enough it never hurts to swap them out early.

[JohannesMakatane]

The spark plugs don't fire, I replaced them

[alwajidtech]

Your channel is monitize???!!
Am also making these kind of videos
Can you reply me please...

[IRONTOSS]

AI robot voice videos SUCK!!!! big thumbs down!

[maxboya]

Disliked for the garbage auto generated voice over.