j0e31.

i just changed my water pump which took me a while to do everything seemed to go okay but when i put everything back together and started it up,it started right up but it has a knocking sound and it idle real low when i gas it it takes about 2 or 3 sec to respond with either reving up or dam near going dead after that . i thought i put the timing belt back like it was could it be that i didn't . can somebody please help me