My car is riding rough after I changed plugs and coils oh no check engine light on 2003 Mercury Grand Marquis

I had the intake manifold replaced it was cracked 2 months later check engine light came on car misfiring started with cl 8 so went through and changed all coils and plugs. found water in cl 5 blew it out changed that too now its a little better but still rough on acceleration oh cleaned MAS what am I missing?

Asked by for the 2003 Mercury Grand Marquis
read live data while driving to determine issues
Qualified Local Mercury Shops
Qualified Mercury Shops For This Repair
921 N Parker St
Technical Ability
Tools & Equipment
Customer Service
Customer Amenities
(714) 486-0367