Growing Pains Continued

The last two days I've been continuing doing the maintenance that the previous owner didn't do. Yesterday I installed new spark plugs and new ignition wires. Today I checked and adjusted the timing, I advanced it by four degrees making the car a bit more spunky (I think; it's hard to tell) and I had a fuel injection treatment done to clean the injectors. Hopefully this will give the car a bit more guts and fix a slight very very slight tendency for the car to hesitate when accelerating.