While drilling & tapping for EGT probe I noticed a crack in the exhaust manifold by the #3 cylinder. (3rd cyl back) I ran a search here on TDR & understand this is a fairly common problem. My question is has anyone with this problem got the dealer to cover it under the Cummins 100K warranty? Did they give you any crap for drilling the exhaust manifold? The crack is on the opposite side of the dividing wall in the exhaust manifold so I know the drilling had nothing to do with it.
TIA, Clay
TIA, Clay