Hey, i was drving today and my car bogged down a lot.. i would push on the gas and then it would sound muffled and then just go. Like its stalling but the engine was stilling running. I also changed the spark plugs thinking it could change the issue, but it didnt. Could it be the fuel pump? I just replaced the fuel filter a day ago and no change. My other guess would be somethin with the crank. Is there a bearing or somethin that could be slipping? Any halp would be great thanx