Using a masonry chisel enlarge the crack to a minimum inch width and then remove all loose material.
How to fix leak in concrete wall.
Squarely cut or undercut the edges of the crack.
10d finishing nails partway into the crack spaced 12 in.
Mix the two part epoxy.
A honeycomb area in a foundation is the result of improper vibration or settling of the concrete thus leaving voids and pockets in the wall.
Injecting a urethane resin under pressure will seal and fill these voids and pockets thus stopping the leak.
Seal the entire concrete wall with a waterproof masonry product.
Use a nail to align injection points.
First scrub the crack clean of any loose concrete paint or old filler using a wire brush.
Paint a generous coating of this material onto the wall working the product in all directions to completely seal any pinholes.
It is important not to create v shaped edges as the hydraulic.