today i changed my timing belt along with all the other ones also changed the water pump and tentioner i'm sure it was all put in right i even double and triple checked now my probelm is when the car idles it idle around 1200rpm when i close the tb screw a bit well then its starts sputtering, if i turn down the fuel of 1k on safc well then same **** sputtering in other words any idle under 1k i sputter other than that car drives fine someone told me since the new belt so tighter than the old one it will take some time to get back to normal . . . i dont know what to say about that ???? i've driven the car about 30 miles so far so good no bent valves but rough idle anyone experienced something like this????????????????????
help please i'm really worried

 

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