Spark plug NGK or BRISK

Some of those markups are insane. I can get NGK laser iridium plugs for less than $70.

At 85k I swapped to NGK Iridium Ix plugs on my 2019 civic with the 2.0na and I swear it added at least 20% response. Makes me wish I would have gotten it with a manual cause it would be so much more fun to drive around town. Also got a few more MPG

I just replaced all 4 spark plugs on my car @ 114k miles. Now I’m so glad I did it because the car feels way more peppy and responsive.

I upgraded to NGK Iridium spark plug in my classic 500, 2 years ago. There were minor but good changes in performance.

The fuel economy increased a bit and the self starts have been better.

NGK, used them for years in multiple cars. Seem to last longer, but I have no proof.

New NGK plugs this summer and she\u2019s still purring away (and snarling when I drop the hammer). Honestly its one of the best motors ever to come from Honda and I\u2019ve loved both of mine.

Make sure you use genuine NGK plugs, otherwise you will have problems.

i got a cheap 80cc kit a while ago and it ran awesome for about 3 months, then i let it sit for almost a year in a garage. Now rusted in some places, but still spins freely, and piston is intact. I just installed a centrifugal clutch and a pull starter, along with a new cdi and new coil, but it just wont start no matter what. I keep pulling and pulling and nothing. I even got a lower temp spark plug for it (NGK B7HS). Fuel is going in, carb seems to be working, i believe im using good enough fuel, tried many different fuel/air mixes... but nothing. Can anyone here please help me figure out what could be wrong? If you need any additional info please ask.

EDIT: after some back and forth with the comments, i decided ill try and disassemble/clean the carburetor, and maybe some other things suggested.

I also realize my formatting isnt the best, but this was one of the first few times i posted in reddit, ever...

And to address me just chucking in new parts suddenly? yeah, not the best move, i realize, but ill try and make it work, and a lesson learned.

Anyway, thank you for the help everyone! I very much appreciate it. Perhaps ill post an update on whether i managed to get it running or not

UPDATE: Today i tried most of what you all suggested and unfortunately, still nothing. I opened the carburetor, as clean as could be.

At this point, my only two suspecrs left is the crankshaft magnet getting misaligned, or im just not getting enough rpm with the pull starter, which is already kind of bogus because it produced a decent spark even when not pulling too fast

I changed the plugs on my 2017 raptor recently with NGK iridium plugs. The punchline is that the truck started backfiring when I pushed it. I ended up putting Motorcraft plugs in and it cleared up.

It has 90k miles and we've been having issues with spark plugs. 3 months ago we replaced them after a cylinder 2 misfire. About a month ago same thing. Both times they looked terrible. Diode was all corroded and the threads had oil on them. Last night on my way to work cylinder 2 misfire came back. Anyway, I always use iridium ngk plugs as thats what's recommended but they are getting expensive having to buy them every month or 2.