Having some issues and i'm hoping my fellow stangers can offer some help. It started a week or so ago, I decided to run some seafoam through the car....strange I thought, no smoke out the back well that's not entirely unheard of I thought, must not be to bad. Couple a days later the car feels like its struggling a little and the power is off some. The next day its starts missing, bucking and running terrible once it has warmed up. This weekend I started doing a little trouble shooting. Pulled the plugs and all but two look perfect, the other two have some build up around the ceramic part at the base of the plug, so I clean those really good and go for a drive......same problem once warm its starts missing something terrible. So I pull the codes and i'm getting a 211 profile ignition pickup fault. In doing a little research I learn that it is most likely the pickup in the dizzy has gone bad.....heres the strange part....yesterday after running the codes I decided to go ahead and use the remaining seafoam and try it again, after letting it sit 5-10 minutes after using seafoam smoke starts rolling out of the back but I noticed now I have the miss no matter whether hot or cold. Is it possible that the seafoam fouled a plug or is the seafoam just coincidence and my problem is still the code 211?