recently ive been smelling the sulfur smell more and more. I also noticed that sometimes that letting off the gas fully after accelerating, and not hitting the breaks, the car shakes a bit (the steering wheel doesnt shake so i dont think its the alignment, plus it doesnt happen all the time). Also, when at a stop i can feel the car idleing more so than i did before and every so often ill feel a clunk.

i havent checked the spark plug tubes for the oil leak issue....would that be causing it? Do i just need a tune up? i need to run to the dealership to get my seat fixed because its creeking like a biotch, and get my front brakes changed, so if this is something i should have them look at i would like to have it all done at the same time.

 

I guessing you still have the OE cats and from what you describe they may be failing. Time to buy some HFCs, but first have a muffler shop or Nissan check your cats to make sure that's the cause.
Gary

 

yup, still have the stock cats. would that be causing the sulfur smell and the rough idle and shaky-ness when not touching the gas or breaks at times?

 

I doubt it's the cats. Get a tune up.

 

I think the sulfur smell is from potentially the cats, not sure about the rough idling tho. A tune up can't hurt though.