can any sc expert tell me what is wrong with my sc? my problem is that when i go over a speed bump and when i try to to give it gas it doesn't want to go, it feel like it don't have any power, i have to wait a few a second when my rpm go down then it want to go, it feel like if it was too heavy, could it be my spark plugs? i just change that like a couple of days of ago, i use bosch patinum spark plugs.

My car have about 156k miles, new timing belt and water pump recently done, what seem to be the problem help help,

 

was it fine before you chnaged the spark plugs? were they the right type? heat range, fitment, gap etc...

 

it feel the same, should i try to tighten it up? what should i do? get a better spark plugs brand?