Your saying your not using the stock mech pump any longer right? If this is right, the the open nipple on the mech pump doesn't make any difference as long as there isn't an attached line from the tank to the pump.
Do you have any open nipples on the top of the tank? Like where the stock pump might have plugged into?
Last edited by johnsongrass1; 02-05-2011 at 11:13 AM.