What Spark Plug Should I Use?

[masterblaster97]

With all of my mods, should I use a B8ES, or a B9ES plug. I've been using B8ES plugs, and I foul them about every 15 or 20 minutes. It gets old. Any thoughts would be appreciated. Thanks

 

[90 blaster]

if u are fouling b8es then i wouldnt go to a b9es...Its gunna foul even more...sounds like ur oil/fuel mixture is rich.... should be 32-1 if ur premixing or 40-1 ur choice.

 

[blasterboy91]

ya if your fouling them every 15-20 mins...then its not the plug...you should lean out ur mixure ALOT...

 

[djack12]

that is a problem with you A/F ratio. to rich. change your jetting.