Originally Posted by TheDon

no mbzkid the "whosh" sound is a vacuum in the tank that has been created from the vent line being clogged and air being sucked in because of the vacuum.. careful the tank might implode a bit if the vacuum gets to strong.. my tank goes whoosh i need to clean the vent lines ..

but check the in tank strainer that requires i think a 43 mm socket.. you should also try a diesel purge.. www.dieselgiant.com has instructions on how to do that..