esamart...I have had 2 of my pumps stop working...not sure why, but 1 started pumping bubbles, and the other started dripping fuel out of the weep hole...

I have several pumps that are as old as they can be...from when they were introduced in the mid 70's (K&B backplate versions) and most still work great (I like 'em ) but both of them that "failed" did it suddenly.