PS: I’m FBO 9 motor/turbo, Cams, 25 psi, 93, stock injectors (maxed out)

Okay so a few months back when took the Evo for a pull I noticed breakup at the start WOT and then it would clear up as I went through the gear.

I pulled my coil packs and noticed that one of my plugs had a small amount of oil on it (will include pic). I replaced my valve cover gasket a few weeks later.

Today I went to replace my spark plugs as it was about time and just want to get an opinion on the condition of the plug. I noticed some gunk in the threads and the tip is very white. I’m not sure if this could be caused just from the occasional misfires during pulls do to older plugs and one bad one...

I plan on going for a few pulls and rechecking the new plugs at some point next week. I only took a pic of one plug but they all pretty much looked like this.

Any help would be greatly appreciated, thank you.

 

they look lean for 93 pump.

they look like you are running e85.

need invest in an afr gauge

 

If you say your stock injectors are maxed out are you also running a stock FP? If so you will need to upgrade both. If all the plugs appear white like that you are more than likely running lean. Ditto comment above.

 

Shoot, forgot to include that. I’m on a Wally 255.

 

I have an AEM AFR. My AFRs are high 11s at WOT last time I checked. It does run a little lean while cruising tho

 

I believe somewhere around 11.6-11.7

 

When I first saw your plug I thought you were running E-85. They can look that way running ethanol. You did say you are running 93 gas though. They should be darker with a more tan color shade to them. I would step up to 750's and get re-tuned. If you are running your current injector set at a high duty cycle you will probably benefit by installing a larger set.

 

Okay, I appreciate the info/advice