I changed my spark plugs for the first time. I put in NGK CR9E and i know i got the gap right. However its losing power a lot and is hesitating. Could the torque on the plugs cause this? What else could it be? HELP!!!!!
Did you cross the wires?
Are the wires coils not secured properly? On my number 2 plug it takes quite a bit to get it secured. You should hear them click when they are secured. Also... make sure you didn't under-tighten one of the plugs?
Maybe un-thread them and then re-thread them. Be very careful not to over-torque them because it could easily turn into a nightmare.
On second thought: perhaps you didn't connect all of the hoses on your gas tank properly when you put it all back together. I would check that as well.