Water leaking inside Coleman How Water on Demand. I was having the problem where the flame wouldn't stay lit. Most suggestions pointed towards the water flow sensor. This YouTube video (http://www.youtube.com/watch?feature=player_detailpage&v=3Z-3m4Ljwiw) was very helpful. Now that I have it all back together water is leaking from the exit side of the water flow sensor. I have the nut tightened all the way and still there is some play in that connection. Is there suppose to be a gasket in there that I might have lost when blowing compressed air through the water flow sensor. Looking for suggestions on how to fix this water leak.

SOURCE: Flames shooting up from back of Coleman stove.

Buy a new one. do not attempt to use this one again. There could be a pin hole in the propane lines or just a small crack. If you can hear it then there's a problem.

However if you really want to fix this one try putting water on the propane lines and then putting on a new tank and opening the valve. DO NOT LIGHT THE STOVE. where there are bubbles there is your leak. When you find it seal it with a Flame retardent sealent or clamp the line. Also I believe Lowe's sells parts that may work. just find out which line is leaking and replace the whole line.

I highly recommend just buying a new one and destroying the old one. DO NOT just throw it away please. Some one out there will grab it and try and use it. They will find out the hard way and maybe get hurt badly themselves or hurt someone else. Just imagine the guy who grabs it and goes camping with his family. Him and his son start it up. the son is right next to the unit. The guy fires it up and boom the son gets burned. Is it just me or would you feel bad if you knew this guy. I have seen it first hand. trust me it sucks. A buddy of mine did this and his son was in hospital for 3 days. he said he will never do that again.

So for safety sake please just buy the new one. don't take unnessecary risks if you don't have too.

SOURCE: We done' use our coleman hot water on demand

I had a similar problem and was able to unscrew the screen at the end of the intake hose and manually move the pump propellor with a long nail which loosened it and it works fine now. I think it had seized with calcium deposit even though I had cleaned it as instructed.

SOURCE: when I fill the patable water tank it leaks on the inside of the trailer

If it leaks while filling it is likely any of the several fittings or it may be the 3 port check valve attached to the incomming water line. These are routinely installed backward. The idea is that when hooked to an external water supply the water goes only to the faucet and when using the tank, water can only go from the tank to the faucet. You cannot be hooked to external water and use the tank.

Any cracks in the tank should be obvious.

Use teflon plumbers tape on all screw fittings or will leak for sure. Hose clamps are also a necessity.