Why do I get a STRONG gas smell through the vents 1st thing in the am in the col on 1995 Nissan Maxima

On a coId start when I turn on the vents, I get a strong gas smell through the vents. It lasts about 20 min. I have changed the fuel pump and checked the fuel lines. What else could it be? The car has 210k miles. There are no codes that come up

by in Montclair, NJ on November 20, 2013
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2 answers 1 comment
ANSWER by , November 20, 2013
small leaks can be hard to find but #1 is correct.if you can't find it have it ck'd b4 your car poss catches fire.
ANSWER by , November 20, 2013
Check the injectors and the injector rail for seepage.
COMMENT by , November 20, 2013
I was told it could be the canister but wouldnt a code come up for that? Should the car be running when I check the injector rail? How do you check the injectors only?