Quote:
Originally Posted by kapnd
Just because shit does happen, I’ll relate that I once installed a new impeller that failed to pump water. After much head scratching and a little cussing, after the second removal discovered that the impeller was correct diameter, but was about a quarter inch too short!
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Exact same thing happened to me on a Cummins 6BTA engine. Changed the impeller and the pump wouldn't pump. Tried all the tricks to make sure pump was flooded, spline on the impeller wasn't loose, etc. Finally called a local Cummins mechanic. Turns out that Cummins used two different pumps/impellers... for the older engines (mine), the impeller was the same diameter but about 1/4" thicker. He sold me the correct impeller and all was well.