when driving it acts like its missfiring
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1990 Mercury Cougar
Question: how do you change the sparkplugs
Answer #1mastertech6371 September 15, 2010, 10:37Master
very tight on the supercharged motor. it pays 2 hours in a shop. plan on double or riple time if you have no expierence.
Answer #2xr789 sc February 29, 2012, 18:16Rookie
check sparks wires just took mine in because of that prob they fix it up great in a full tune up