running rich / intake gasket questions
I have a check engine lite, banks 1 and 2 running lean. I cannot find any vac leaks. Not sure what else to look for. TB and MAF was cleaned. Runs very well. I have read where the intake gasket was replaced and corrected this. Is this a major job to do? What kind of labor cost should I be looking at from a mech shop?
2004 XLT 4x4 4.0 42K miles