Hi all: This is a two part question for the board... I get a slight odor of gas after driving my 95 Maxima and parking it in the garage. I've had it to the dealer that I use from time to time and they did (I think) a pretty thorough inspection. They were not able to find any obvious leaks and their only suspicion is the charcoal canister needs to be replaced. This is an expensive part for this car and although I could attempt installation myself, I may elect to have them do it in which case that is more $$. I always thought evap systems were "closed". If there are no leaks in the lines, where is the odor coming from? Is there some over pressurization vent or something that opens up? Also, the gap fine is fine and holding pressure. Now to the second question...some folks on a Nissan board I frequent suggested checking for engine codes with a scanner. They said that just because the CEL is not on does not guarantee there is not a code to be retrieved. Is this correct? From what I understand Nissan has their own scanner (I think it is called Consult). Should I take it to another dealer to see if they can retrieve any codes that might point to something other than the canister? What about an OBDII scanner? I don't have one nor have ever used one but see they are really cheap at PepBoys and the like. Does anyone know if an OBDII scanner would retrieve the same codes as what Nissan might determine? If so, can I get away with one of these $14 USD ones I see for sale or should I invest in something a bit better and what should I look for as a first time buyer/user of one of these.