how do you change the sparkplugs on 1990 Mercury Cougar

when driving it acts like its missfiring

Asked by for the 1990 Mercury Cougar
2 answers
check sparks wires just took mine in because of that prob they fix it up great in a full tune up
very tight on the supercharged motor. it pays 2 hours in a shop. plan on double or riple time if you have no expierence.