If I'm doing a tune up on a mercury marquis what all do I need to replace
Saturday, March 12th, 2011 AT 8:10 AM
1 Reply
RASMATAZ
MECHANIC
75,992 POSTS
First of -you need to do an engine compression check-giving it a tune-up is not gonna do you good if you have a compression problem-start with plugs and wires/air and fuel filter -