Originally Posted by shonnv
Does anyone knows about spark plugs? Does it makes a difference when you put the spark plugs with 4 things on top instead of 1.
I did that to my old 97 cavalier 2.4 and I did felt the difference but I want to try the same on my 03 Accord V6. Is it going to affect the warranty or any damage to the engine?
Thanks alot
No, do NOT put the ones with 4 things in your Accord. Those are Bosch Platinum 4's, and I've heard many horror stories of people running Bosh's in Hondas. General rule of thumb: do not put German spark plugs in Japanese engines.
If you want the best performance, get coppers. For relatively low compression, normally aspirated engines like ours, coppers will provide the best spark. My personal favorites are NGK V-Power. However, if you want increased longevity, get platinum like you get from Honda. They will last at least twice longer than coppers, but are more expensive and theoretically shouldn't produce a spark as powerful. Iridiums are a waste of money for our car, IMO, as they are mainly good for high compression and turbocharged engines where the spark plug needs to be able to withstand a very high temperature. So go 'NGK' or 'Denso' copper for economy and performance or platinum for longevity.