i recently hit 70k on my 04 civic ex, just had the spark plugs changed. and now when i turn the air/heat on i smell gas through the vents and when i exit the car. but when i have the air circulating inside the vehicle there is nomore smell! what can it be!?!?!? should i be worried???

 

you might be smelling exhaust, not gas

 

...crack the window...

 

lulz, thatll fix the problome

but nah, seriously, untill you find out what is wrong, definatly keep the window cracked, gas or exhaust, itll put ya to sleep and you will DIE... DIEEEEE!!!!!... and you dont want that do you? neither do we!