Best performance spark plug for gasoline sedan

[robot.sonic]

I could swear the acceleration got better when I shifted to Iridium vs stock/regular plugs.

Kasi bago na spark plug mo. Yung na notice mo na better performance ay yung restored na power.

[Egan101]

Really? Isn't 5-6T kms too frequent? ...

I guess that would be fine if the plugs are rated for up to 10k km. For plugs rated up to 100k km, maybe it is good to check them in 30k-40k intervals.

[StockEngine]

Correct. Spark plugs degrade overtime. Even if they say that it can last up to 20,000 kms, i dont use them for that long. Mas mura na naman ang iridium plugs kaysa dati. I just replace them around 5-6t kms


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a 30,000km rated copper plug is probably good for 400hrs.

karamihan wala pang 30000km naka 1500hrs na lol. low power daw! missfire!

FOCUS

[bloowolf]

When I still had gasoline cars, I replaced the stock (Nippon Denso or NGK) with Bosch Platinum & just gapped it myself 2x a year. With the stock plugs, I replaced them every 5k. With the Bosch Platinum, sometimes more than a year or whenever I feel like it runs rough already. There are corresponding replacement performance plugs for the stock ones. You can use the best, just as long as it is more superior to the stock ones. Also, it is worth learning to gap them, practice with the old ones.

[polar01]

I guess that would be fine if the plugs are rated for up to 10k km. For plugs rated up to 100k km, maybe it is good to check them in 30k-40k intervals.

I haven’t changed my stock iridium plugs in my 2010 Honda City. The manual reco is to change every 100k kms, but its160k kms already with no issues. FC is at 12.4km/li. [emoji4]


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[benchph1]

I haven’t changed my stock iridium plugs in my 2010 Honda City. The manual reco is to change every 100k kms, but its160k kms already with no issues. FC is at 12.4km/li. [emoji4]


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You havent taken the plugs out to clean and check the gap?


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[polar01]

You havent taken the plugs out to clean and check the gap?


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Nope. [emoji51]


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[Lin Dan]

For newer cars with modern engines, you can't really say the difference between a regular spark plug compared to an expensive one.

You just need to clean them every 5k and change them every 10k. Like in my case usually copper core conventional spark plugs lang nagamit ko dati.

[jick.cejoco]

One of the reasons why platinum or iridium plugs are used is because of longer service life. A lot of newer cars takes time to replace the spark plugs. The labor in most cases outweigh the cost of the plugs. I remember when I used to work at a dealership shop, a customer wanted a minor tune-up for a 1990 Cadillac with Northstar V8 and he wanted it done while he waits, I gave his keys back and asked him to bring it back when it's convenient fo him without me burning my arms to replace the plugs on the firewall side. It all depends what car you intend to replace plugs.

[StockEngine]

One of the reasons why platinum or iridium plugs are used is because of longer service life. A lot of newer cars takes time to replace the spark plugs. The labor in most cases outweigh the cost of the plugs. I remember when I used to work at a dealership shop, a customer wanted a minor tune-up for a 1990 Cadillac with Northstar V8 and he wanted it done while he waits, I gave his keys back and asked him to bring it back when it's convenient fo him without me burning my arms to replace the plugs on the firewall side. It all depends what car you intend to replace plugs.

yun hemi v8 16 spark plugs and needs a dash board removal [emoji28]

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[Egan101]

The previous gen Jazz was a bit of a challenge when changing plugs. The plugs are located on the other side of the engine which is not exposed.

I am looking at my FXT’s engine and I am guessing it is going to be a b!&£* to replace those plugs!


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[jick.cejoco]

With some of today's cars, it is easier and faster to replace the igniter of a Boeing 747 to nclude taking the maintenance stand to the aircraft than replacing spark plugs of some cars.

[Walter]

With Subaru's newer designs ... the boxer engine has to be lowered a little to be able to access the spark plugs ...

[jick.cejoco]

More and more people are sharing their concern and frustration in replacing some of the newer cars. Even in the '90's, the toyotaprevia, you have to remove the front passenger seat, the floorboard under that seat and you better have a 3/8 drive 6" wobble extension with your ratchet and 5/8" spark plugs socket. Not all cars are that easy to service until you tried them, hence, the longer projected service life spark plugs. Gone are the days when we had flat head engines with large 7/8" drive easily accessible spark plugs even with just an adjustable wrench.

[granro01]

Guys, based on your experience, which spark plug brand/type provides the best performance (better acceleration, fuel economy, power, etc)?

When I asked some mechanics, they only said iridium spark plugs are the best but when I searched Lazada, there so many of them with quite wide price range.

PS. Just based on performance, assuming price is not an issue.

If you are really up to really serious modification spark plugs are only one of them. You also have to modify your ignition coil to racing coil to ensure a steady flow of current and voltage to your plugs.

[Janemar]

If you are really up to really serious modification spark plugs are only one of them. You also have to modify your ignition coil to racing coil to ensure a steady flow of current and voltage to your plugs.

I'm using stock ignition system on my 500whp car with over 30psi of boost and revving to 9k rpm, no ignition related issues. This has been my setup since 2007 when I boosted this car.

I'm using a cheap replacement "circuit" brand ignition coil(600pesos) and a "surplus" ngk plug wires(1500 pesos.) I just used a generic copper bkr8 spark plug.

So yes, you need to talk to a knowledgable tuner and research. Little knowledge is expensive... LOL.

[uls]

I'm using stock ignition system on my 500whp car with over 30psi of boost and revving to 9k rpm, no ignition related issues. This has been my setup since 2007 when I boosted this car.

I'm using a cheap replacement "circuit" brand ignition coil(600pesos) and a "surplus" ngk plug wires(1500 pesos.) I just used a generic copper bkr8 spark plug.

So yes, you need to talk to a knowledgable tuner and research. Little knowledge is expensive... LOL.

dati when i had a 4g63 turbo it came with "cold" spark plugs