any advise out there on checking/cleaning injectors , besides the fuel additives?? Also, what lb rating is std for '91 5.0,E4OD, 3.55., and what is the advantage of going to a different lb rating for aftermarket injector?

 

19# injectors are stock.They should be orange or yellow on top.There are companies that will ultrasonicly clean and flow check injectors.The shop around here charges 15$ a piece.If you shop around on the net you can find sets for around 200$.Unless you have major performance mods going up in size is a waste of gas and money.

Billy