There are threads on here about Seafoam ($9 at WalMart). You might consider trying a treatment before you do anything really expensive. I put it in the gas tank but there is a force-feed method that is quicker. Make sure you read all the information before you do it. Good luck and welcome. I've been helped by these folks and they will help you too.
2005 WK, 5.7L, Gold, Leather
2003 TJ 4.0L Freedom Edition, Flame Red, 5 spd., CAI, Warn, stinger, Hella/KC trail lights.
"When you stop contributing you are just taking up space."