Where do i go?
 

where do i find out more info on making a check valve

Re:Where do i go?
 

just run a vacuum line from the hole that your map is over to the bottom of the map (basically just an extension instead of having the map right on top of the hole), then just cut the vacuum hose, and put check valves in line

Re:Where do i go?
 

ok i found a site on how to make it. where do i buy the check valves.

Re:Where do i go?
 

from a pet store, they are fish tank valves or something....

Re:Where do i go?
 

thanks