alright so far my car has been running great and been using shell 91 and have done proper maitenance. I've been scared about the whole carbon build up issue but last night I turned the car on and the idle jumped from 500 to 900/1000, I was kind like what the "f". I drove the car and stopped still did it, so I romped it till it hit second gear and stopped at the light and it was normal. is this the first signs of carbon build up? if so should I just go to the dealership and have them service it. their probably not going to see it even if they plug it in to their computer/reader or should I do my own service by using sea foam instead?


thanks, D

 

also it jumped back and forth from 500-900/1000 Rpms just to clear some confusion