I have a 91 integra with a recent rebuilt b18. I have already replaced all the motor mounts except for the rear. it origionaly had mounts filled with 3m window weld for cheap solid mounts. When we were putting in the motor i neglected to replace the rear mount with a new one. Now the car has a horrible hard vibration only at idle, fine wile driving. I have been in many cars with all solid mounts and none of them vibrate like this. does anyone have any suggestions what i could check?

 

i have stock mounts and my DA vibration is bad but i dont know why srry i cant help you if you fine out let me know plz

 

stiff mounts cause vibrations