I have a 1995 Mighty Max 2.4L Auto. The compression is good across the board at 120 psi except for number 3 cylinder which is 0 no compression on my compression gauge I check it 3 times to see and you can hear the motor spin over faster when comp gauge is in the number 3 cylinder. The motor spins slower and you can hear the compression building into the gauge on the other cylinders and see it on the gauge as well. When it is running it is vibrating at idle and when pressing on brake pedal cause its a automatic it almost wants to cut off so i have to put it in neutral and then switch it to drive when the light turns green but when i get on it. It runs smooth and strong....So big question what is wrong here?