Performing a compression test would prove that the cam shaft timing is off. An most likely it is from what you have written. The problem that most mechanics run into when installing the timing belt falls with the tensioner. Once the tensioner is released it moves the timing 1 to 2 teeth. This means when you install the belt it needs to be 1 to 2 teeth off in the right direction do when the tensioner is released, the timing is dead on. Once the tensioner is set, you need to crank the engine over 2 to 3 times and re-check the timing again to insure it is correct.
For information on timing belt recommended replacement interval, refer to Section 1.
CAUTION The 2.0L engine is an interference motor. Extending the replacement interval could lead to the belt breaking and severe and costly engine damage. Care must be taken if rotating the crankshaft or camshafts with the belt off, if resistance is felt, do not force them to turn.
NOTE: If the special tool is unavailable, a suitable length and width straight edge can be used to align the camshafts.
NOTE: If the timing belt is to be reused, mark the belt for the direction of rotation before removing to prevent premature wear or failure.
NOTE: It is recommended to purchase a tensioner spring and retaining bolt through the dealer parts to apply the proper tension for used or new belt installations. The spring is bolted to the tensioner assembly and becomes a part of the engine. Ignore this notice if the tensioner spring is already installed.
NOTE: A slight adjustment of the camshafts to allow the insertion of the camshaft alignment timing tool is permissible as long as the crankshaft stays at the TDC location.