So I recently took a gander at my spark plugs, only to realize that I think I'm running rich because the spark plugs smelt of fuel and they had black soot on them. I just replaced them a couple months back and haven't ran the car much so I know it's not because they're old. I recently cleaned some soot/carbon deposit from my tailpipes because I seafoamed and figured that was the cause. Can seafoam foul up your plugs from the carbon? should I just replace them again? One more thing, can I send my 3.4L pcm to be tuned? I hear about Solomon but havent heard much.

 

Make sure the plugs are gapped right. I don't see the point in paying decent money to tune a stock engine though. Only problem I've heard with seafoam is that it can loosen a film throughout your lines which can coat the injectors and cause problems, so you have to use it every so often to keep things clean.

 

any codes? id clean the plugs drive it for a couple days and pull them out again keep track of what plug goes to what cylinder. and no you cant get your pcm tuned solomon and pcmforless dont do the 3.4