I have a 95 3.4, it dosnt seem like it has been running that great lately. I was getting around 300-340 miles on a tank or more and now im getting around 245-280. When im idleing around and sdecide to get after it, it has a thumping noice, sounds like somewhere down in the air filter area, it kinda sputters a little and then finally takes off, but not good responce?what can i do or what is it?

 

It sounds like maybe one of your spark plugs is out or somethings wrong with your filter

 

hmm the spark plugz are pretty new prob about 3 months old or so, what wouuld be wrong with the filter?