Here's the prob that we are having. When the crew or anyone starts up #3 eng. the booster press. is fine but it takes the engine pump light up to 40 seconds to turn off. We have changed the pressure swith and the snubber valve on both #2 and #3 because it was happening on #2 for awhile. Any help and or suggestions with this would be a great help, it's kinda of an intermittent problem.