Hello, new to the site (just joined today) and I have a question. I have a 2006 impala ls that has 182,000 miles on it. A lot I know. I just recently got it and I've noticed when I try to accelerate half of the time the car's RPMs will go up but the car wont accelerate, and the other half I'll get that amazing pull from the car. I looked online for a bit and some say it could be a bad fuel injector(s). What could be the problem, and how would I go about fixing this? I have no problem fixing this myself so if going to a mechanic can be avoided then let me know. Thanks in advance.