The entire area around the pinhole is going to be too thin to weld due to the corrosion. The choices are to weld a patch over the area of the leak or replacement of the pipe. Another possability is if you go to the auto parts store maybe they can find you a hose that has a bend in it like the one you have but is a little longer so you can go over the spot. Since you have found 1 spot you should remove ALL hoses and clean the corrosion from all pipes. This happens because the coolant gets old and turns acidic and attacks the aluminum. It also indicates the hoses are old and need to be replaced. Ther is no easy fix because of the pressure that must be contained. David Teitelbaum vin 10757 --- In dmcnews@xxxxxxxxxxxxxxx, billsfanmd@xxxx wrote: > I have a very small leak on my passenger side coolant pipe at the rubber > "elbow" under the engine where it begins to lead up toward the resevoir tank. > It is the 16 inch aluminum coolant pipe pipe and not the rubber hose. I had > some corrosion on the ends and it appears there must be a small pinhole crack > in the aluminum near the end. If this was at any other spot I would just cut > a longer rubber hose and clamp past the hole. Unfortunatly, it is near the > special elbow hose. I may just buy another coolant pipe but I was just > wondering if there was an easy fix for small holes or corrosion cracks in > these pipes... > > thanks > > Mike C > 2109 > > > [Non-text portions of this message have been removed]