need help

:
mazda/ protege/ mazdaspeed/ 2003
please help!!

03 mazda protege mazdaspeed.

there is some type of vibration when i rev the engine from 2.5k to 4k rpms and ot also happens when im driving so im guessing its coming from the engine. does anyone have any idea what this could be? im not very good with cars and i need some advice and help please.
 
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