How to pressure test the water lines?

[d.a.v.e]

I have a leak somewhere am not really sure how to pressure test my fuel tubing. I'm assuming its my tubing as I don't see any cracks in the haul but its a pretty big leak? Thinking an air compressor might be a bit much but visually it looks like all my water lines are hooked up I have zipties on each nipple, they all appear to be tight and well secured? Thinking I must have a cracked line somewhere?

[egneg]

I rigged up a contraption to hook up the line from the rudder to the water spigot outside my house - works like a champ.

[srislash]

I use a auto windshield washer pump using a 3s battery and right through the line.Just watch where you are aiming.

[dana]

I glued a fitting to the cap of a water bottle and connect to the line. Also try putting in bathtub without cover to check for leaks

[Visual Perfection]

I use a little squeeze bottle that has a nozzle that fits right into the tube. You could use a syringe or something as well. force the water through and if you want you could pinch off the outlet end and force the water..if nothing goes through or it forces back out the end you are putting the water in at, then you are leak free...if not you should be able to tell where the leak is pretty quickly.

[HydroMike]

u can use a U-tube manometers works off of low psi its used for heat and air systems works very well

[Darin Jordan]

A large syringe seems to do the job just fine, and it's cheap...

[dana]

Also be careful with zip ties. If you tighten them too much they can cut or split lines

[Darin Jordan]

If I need to tighten the water line fit, I usually cut a short section of the fuel tubing and place it over the original fuel tubing. For the pressures we experience, this seems to work fine.