Learned a new trick tonight

Fuel pumps are now made with plated plastic for the commutator. (on armature ,what the brushes run against) The brushes don't wear out, the plating wears thin like soap and flakes off. Now it,s russian roulette til it stops on the dead spot. You tap the tank and sometimes you get it to go. It runs but the brush now hits the plating after the dead spot making it bigger and then all the tapping in the world won,t help. If it goes for you get it fixed as your on your grace period.