Gas BBQ

wato35 - are you talking about a standard gas bbq ie. cast iron burners or a camping stove type bbq with jets????

Pull the taps apart you'll probably find some crap in there or the O ring on the spindle has perished and stuck.

I have had the same problem with an LPG camping stove - gas wasn't getting from the on-off valve to the burner. The problem was a blocked jet. There is a jet downstream of the on-off valve through which the gas must pass. The hole in this jet is extremely small - too small for fuse wire to pass through. If the jet gets blocked, then no gas passes and the appliance doesn't work. For me, the solution was to change jet. Spare jets are available from good camping stores, but make sure you get the right size or you will be delivering too much or too little gas to your appliance. The size is usually stamped on the jet.

After inspecting my stove set-up, I decided that the blockage of the jet had been caused by dust accumulating on the outlet from the LPG gas bottle. I had lost the plastic cap that goes over the outlet when not in use. Dust would accumulate on the outlet in transit. Then, when I attached the hose from the stove to the bottle, the gas emerging from the bottle would pick up dust and transport it to the jet. As I said, the hole in the jet is very small, and dust will easily clog it. I have since replaced the plastic cap on the gas bottle and make sure that I always replace it when the bottle is not in use. I also thoroughly blow off the bottle outlet before attaching the hose. Haven't had any problems since adopting these measures.

Hope this helps.

do you have a regulater in line?? Might be worth checking it out.

If there is a regulator, disconnect gas hose to it and see if thgere is any flow. If not (and assuming bottle is full) have look at the side opposite the outlet. There is a hole that must be kept clear. This sometimes gets blocked by mud. If so clear it out. A semi-blocked hole will also reduce the pressure.
Collyn Rivers

If it is one of the twin burner primus units they will not work with a regulator attached to the line.

Had the same problem on the long weekend with a brand new stove and bottle, luckily had a plumber on hand who fixed the problem by removing the regulator.

cheers

have had the same prob on and off for years.
one well respected camping store told me that some gas is "dirty", especially in w.a.
it leaves a residue in the pipes, even if you are careful to burn it off every time you finish cooking.( one good trick)
remove the jets and see if the gas comes out. check jet holes and clean if blocked.
in an open area, with jets out, turn the gas on full. block the hole with your digit then release in short spurts. this might reveal an oily substance present in the line, which will be on your fingertip.try to purge this out by repeating former.
also, was told that overfilling gas bottles is not good (i geuss it could send liquid gas down the tube).
hope this helps.
btw, used to change jets every time this happened, but as this was proving mildly costly i just clean them out.

Hi wato35,

This is the most likely time of the year a wasp to build its nest either in the gas inlet into your BBQ or the outlet of the bottle. (seems to be just the riht size for the buggers).
If you have not seen the nest when you connected the lines, when you turn the bottle on, the pressure will usually push the mud(and the wasp) right through the lines and block up either at the tap on the BBQ or some may go right through to the burners. It is a bit different on a stove as you will have jets which block easily but on a BBQ there are many outlet holes and you will never block all of them.

I would disconnect the burners and blow with a compressor backwards through the system (gas bottle diconnected of course) with high pressure air. Remember to have the tap turned on. This will also tell you that the tap is working ok too.

Good luck with it,

Brett