my car stutters?

[tunerkid]

i THINK this is a problem with my spark plugs but i am not sure... it feels like my car has lost a significant amout of power when i step on the gas, due to the car sputtering. its mainly in my lower RPM's.

if it is my spark plugs... what is the stock heat for the 420a? what are good plugs to replace them with?

 

[xXDSMSoonXx]

Hmmm it could possibly be a vaccum leak check around the t-body and make sure all the bolts are tight around there also check the vacccum lines when the car is started and listen around to see if you can hear air hissing out.

 

[tunerkid]

checkd for a leak in the vaccum, found nothing. i listened and didnt hear shit... im about 90% sure its my plugs, but could this be anything else?