Mainly my trouble is my civic concerning the acceleration works fine and after a little bit of driving or some times right away the engine will rev when I push the gas but the car won't be accelerating in speed I think it's the fuel injector but then I read about the nut on top of the fuel filter or my cold air intake I hear could be the problem cause it may have a leak just looking for help on procedures to eliminate the problems to get it back to a champ before I go replacing everything maybe some test methods? Any recommendations? Secondly my speedometer will sometimes work or will be working fine the all of a sudden just stop or not work from the get go I am thinking speed sensor or loose connection or maybe a fault do to the acceleration problem sending mix singles both ways please someone help with some steps and I will get it done and report bacdk so anyone with this problem won't go through this headache