How do you change the spark plugs on a 92 Q45?

what are the best spark plugs to use and should i change them the car has 158+++ miles and shudder a bit in idel but not drivingHow do you change the spark plugs on a 92 Q45?i would use factory plugs probably NGK. Give yourself plenty of time the labor guide calls for 8hrs to replace them very tedious and time consuming good luckHow do you change the spark plugs on a 92 Q45?Bosch platinum.



And you should definitly change them.