I have a 2006 honda fit and i am experiencing some Rough idle, Car hesitation (jolting sensation), Lack of Power in my car sprecially when the AC is on. And whenever i put the car on drive the rpm just goes up and down accompanied with the rough shaking. I already did some small tune up thinking it would solve the problem but it didnt and i dont want to spend money more than what i really need to. So can you honorable dudes help me narrow down whats causing the problem? it would be a very big help. btw my car knowledge is close to zero and i only have the internet to rely on so....
Edit: Car stalls on idle speeds
What i did so far: replaced all 8 spark plugs, replaced the vavle cover gasket