I've got a squeaky alternator. While trying to get the thing out I found that the EGR valve was in the way. But, the bolts holding the EGR mount to the block seem like they're going to sheer off if I torque them enough. A sticky aluminum kind of thing. For now I just put the alternator back on waiting for a better time to work on this. But honestly, it doesn't seem possible to fit an impact wrench in there to break them loose. I'm looking for suggestions.