Why Does Honda Civic Hybrid Have 8 Spark Plugs?

Eight spark plugs—two for each cylinder—are used in the i-DSI engine to boost fuel efficiency and ensure complete fuel combustion at every ignition.

How many plugs are there in a Honda Civic?

Although it might seem like a simple question, the answer can change based on your engine.

One spark plug should be present in each cylinder of your car as a general rule. Therefore, if you have a four-cylinder car, it will have four spark plugs. Six spark plugs will be used in a six-cylinder automobile, and so on.

This maxim may not always apply, though, as some engines are referred to as “dual spark engines.” Twin spark engines use two spark plugs per cylinder, as the name implies.

Ask your car’s manufacturer or a dependable repair if you’re unclear if it has a twin spark engine.

How frequently should a Honda Civic replace its spark plugs?

Any car’s spark plugs are responsible for delivering the electric current needed to fire up the engine. Your automobile wouldn’t start if they weren’t working properly. Fortunately, they require much less upkeep than the majority of other automotive components.

Spark plugs should be replaced every seven years or 105,000 miles, according to Honda. You may discover this information in your Honda Civic’s owner’s manual if you’re ever unsure.

It could be a good idea to review your auto insurance at this time since you’re taking the time to learn more about automotive maintenance.

Are spark plugs used in hybrid vehicles?

While many hybrid drivers can easily change their spark plugs, check their fluid levels, and replace their air filters, more complex vehicle maintenance jobs may be more challenging due to the car’s sophisticated electronics.

Has the Honda Jazz eight spark plugs?

Your Honda Jazz’s model will determine this. While iVTEC versions only have 4 spark plugs, all iDSI models have 8 spark plugs. It should mention on the top of the engine if you are unsure of which engine is in your car.

Engines using dual spark ignition, or DSI, need two plugs per cylinder. The fuel efficiency of your car can be increased by using two spark plugs per cylinder since they promote better combustion and quicker fuel ignition.

Honda iDSI: What is it?

Honda produced the L-series, a small inline-four engine that was first used in the Honda Fit in 2001. It comes in displacement variations of 1.2 L (1,198 cc), 1.3 L (1,318 cc), and 1.5 L (1,497 cc), which go by the titles L12A, L13A, and L15A. These engines are sold globally in the 5-door Honda BrioFit/JazzhatchbackHonda Civic and the 4-door Fit Aria/Citysedan, depending on the location (also known as Fit Saloon). The Airwavewagon and MobilioMPV, which are available solely in Japan, both contain them.

On this engine series, there are two alternative valvetrains. The L12A, L13A, and L15A feature “intelligent Dual & Sequential Ignition,” or i-DSI (Japanese). In order to promote a more thorough burn of the gasoline, i-DSI uses two spark plugs per cylinder that fire at various intervals during the combustion process. By effectively utilizing the gasoline, this method increases engine power while minimizing fuel consumption. Also lowered are emissions. The i-DSI engines can perform better without needing to crank the engine at high speeds thanks to their two to five valves per cylinder and modest redline of only 6,000 rpm. They also reach their maximum torque at mid-range rpm. The i-DSI is renowned for using high compression, long stroke, lightweight, and compact engines instead of turbochargers in the performance category.

The VTEC on one of the two variations of the L15A is the other valvetrain in use. With 4 valves per cylinder and a slightly higher redline, this engine prioritizes performance above efficiency and achieves peak torque at a higher rpm. Even so, it still provides a nice balance of power and fuel economy. The compression ratios of the i-DSI and VTEC are 10.8:1 and 10.4:1, respectively, which are both quite high.

Before April 2006, the 5-speed manual transmission, continuously variable transmission (CVT), and dual clutch transmission were the only transmissions available for the L-series (DCT). An L-series engine was coupled to a conventional automatic transmission with a torque converter for the first time with the release of the Fit in Canada and the US. The L12A i-DSI is only sold with a 5-speed manual transmission and is only offered in the local European market Jazz.

The L15A7 (i-VTEC) engine joined the 1.6L Ford Kent engine as a class-legal option for SCCA-sanctioned Formula F competition as of 2010.


In order to cut emissions and improve fuel efficiency for a variety of their vehicles, Honda released the L15B (DOHC-VTC-TURBO-VTEC) engine in 2016. It is available with 6-speed manual and CVT transmissions that feature Earth Dreams Technology.


What are symptoms that your spark plugs are failing?

Every car owner wants their vehicle to run as efficiently as possible, and in order to do so, every component of the automobile—even the seemingly insignificant spark plugs—must receive the correct maintenance. Although a spark plug may be little, it is a very significant piece of machinery because it is responsible for starting the vehicle. This is accomplished via the spark produced by the spark plug, which ignites the air-fuel mixture inside the combustion engine.

The spark plugs ignite the engine’s pistons, which then proceed to generate the energy required to keep the car moving as it travels down the road. A vehicle’s lifespan is increased by timely and suitable car maintenance, which also makes for a far better overall driving experience. The car may begin to show indicators that it requires maintenance if the owner forgets to bring it in for a routine tune-up. We at Tom Kadlec Kia hope that our auto maintenance advice will assist Rochester area motorists in determining when it’s time to replace their spark plugs (or at least cleaned).

Which spark plug manufacturer does Honda use?

As I previously stated, NGK spark plugs are typically placed in Honda automobiles at the factory. There are Densos within several high-end versions. VTEC or not, 1.7L or 3L, and other technical parameters have no bearing on this.

I’m aware that many customers decide to install Bosch spark plugs in their Honda vehicles. I don’t really advise it because Honda, as a manufacturer, uses Japanese plugs in all of its vehicles, including the Accord, Civic, Element, Pilot, and others.

Of course, copper is the least expensive. Its mileage, however, ranges from 20 to 40 thousand miles, with an average of about 30 thousand. Iridium can provide greater than three times the mileage while costing three times as much as platinum spark plugs.

The performance doesn’t really depend much on the content. There is only one exception: if you’re running boost, iridium spark plugs are the best option. But performance is the same for common settings.

How can I tell if I need to replace my spark plugs?

7 Indices That It’s Time to Change Your Spark Plugs

  • Starting the automobile is difficult.
  • The engine stalls out.
  • More frequently, you’re stopping at the gas station.
  • The idle of the engine is noisy and harsh.
  • Your automobile has trouble picking up speed.
  • When driving normally, the engine is rather noisy.
  • Your check engine light is illuminated.

An iridium plug is what?

With a 700 higher melting point than platinum, iridium is believed to be six times stronger and eight times tougher than that metal. Spark plugs made of iridium feature incredibly tiny electrodes and good wear characteristics. Iridium spark plugs can live up to 25% longer than comparable platinum spark plugs because of their durability.

Iridium spark plugs include a core electrode made of a thin wire that is intended to carry electricity more effectively and improve firing efficiency.

This valuable metal comes at a cost. Spark plugs made of iridium are often the most expensive, costing between $8 and $15 each.

The number of spark plugs in a 2010 Honda Insight.

My 2010 Insight’s spark plugs were eventually replaced by me. I have now traveled 109000 miles. For those who might like to save some money in the future, I thought I’d offer a brief “how to.”

There are 8 spark plugs; the 4 in the front are fairly simple to access, and the ones in the back are similarly simple to access with a little preparation.

The first thing that needs to be taken off is the plastic shroud that covers the windshield wipers at the base of the windshield. You’ll need to take the windshield wipers off before you can remove it. The wiper bolts are 14 mm in diameter. It’s time to remove the shroud after the wipers have been taken off. This is fastened down using clips rather than bolts. Only the two plastic clips in the corners need to be guarded against breaking or loosing.

The remaining clips, which are all metal and run the length of the shroud, simply snap on and off.

Once the plastic shroud is removed, access to the engine bay’s back is restricted by a metal plate that fastens to the top of the firewall. This is fixed in place by five 10mm bolts.

How frequently should a hybrid have its spark plugs changed?

Experts advise changing your spark plugs around every 30,000 miles to maintain the ignition system of your Honda car in top condition.