Nissan Repair: altima 07, nissan altima, charcoal canister

Question
I drive a Nissan altima 07 and  while driving and speeding up (let's say from 40 to 60), it start to smell very strongly of gas I slow down and the car stop smelling like gas. It's always very sudden and strong and it happens when i increase my speed very fast, at the dealer they didn't find any leaks and they don't want to do the road test. What do you suggest? in 08 they replaced parts of pipe of the exhaust system("factory Fault") it was really noisy Thank you

Answer
Giovanni,

Sounds like you have a problem with the evaporative system where the fuel system is closed and somewhere it is leaking.  There is a charcoal canister in the back by the gas tank and lines that run to the front where the engine sucks up excessive vapors.  I would ask the dealer to test drive the car.  If they will not try another dealer or contact Nissan North America.  The number is in the owners manual.