Bad Spark Plug Symptoms
Spark plugs are very important element of the vehicle's engine. Although it is quite abandoned part of the engine spark plugs are critical for normal vehicle running. Spark plugs are composed of a central conductor, an insulator and a shell. Its mission is to inflame with an electric spark mix of fuel and air. This process starts the engine and allows it to work correctly. Hence, spark plugs are critically important for fuel economy, good combustion and engine performance.
But the main thing that provides spark plug is uninterrupted movement of a vehicle. Drivers should remember that cleaning absence may cause plug failure, that will result a lot of problems. There are some common bad spark plug symptoms.
The Most Common Symptoms of Bad Spark Plugs
The most common symptom of bad spark plugs is engine's starting troubles. The engine can’t start even after several attempts. The reason of this problem may be that the spark plug fails to produce the spark. Faulty spark plugs may cause rapid discharge of the battery, so this spark plug need to be replaced.
Rough engine idle
If your vehicle is bouncy when the engine is running and makes more vibration as well, it might signify that your vehicle's "heart" stumbles. It is common symptom of a bad spark plug, so we recommend you to check it out until it's too late and until repairing becomes too expensive.
Engine misfire is easy to identify: if your vehicle's engine stops during driving and then attains pace, it is engine misfire. Even if one of the cylinders interrupts the firing, your engine will misfire. It means one of the spark plugs doesn’t work correctly. During the misfire your vehicle emits more contaminated exhaust gases.
Engine surging or engine hesitation is an obvious symptom of the bad spark plug as well. When it happens your vehicle makes sharp jerks first and then slows down. This problem decreases engine power and might be dangerous in massive traffic on the road.
This symptom affects fuel economy. Bad spark plug decreases engine's performance and increases fuel consumption, so the mileage decreases.
One more bad spark plug symptom that is easy to identify is poor acceleration. It seems like engine executes your commands with delay and the engine performance is hampered. Pushing the acceleration pedal down doesn’t boost your vehicle immediately.