Commercial Stainless Steel Grill: Have a small blue flame but the flame is not large...
Have a small blue flame but the flame is not large enough to heat the grill hot enough to grill properly. Worked ok when new but has developed the problem after only a few uses.
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Sounds like you may have a tank of bad gas. Green is not a color related to the flame description of gas appliances. Blue, Yellow & Orange are pretty much it.
Easy solution. Turn off your propane grill tank. Disconnect the hose from the tank, Wait 5 minutes and reconnect the hose. Now, turn the tank vale on very, very slowly, until it full open. Then light each burner one at a time. Turn the flames to high.The burner flame height should have returned to normal.
Remember to turn the tank on very, very slowly each time after turning the tank off.
LP or NG, all burners on high, top closed, out of the high winds (if any) 500+ degrees in 10 - 15 minutes. If not, double check temperture with a secondatry temperture device. If it an old unit, could be gas lines partially cloged. What size of flames come off of the burnes and what are the colors (AT THE BURNER, IN THE MIDDLE OF FLAME, AND AT THE TIP OF THE FLAME.). The olors will indicate the gas / oxyen mixture and therfore heating efficency and templture.)
Yellow is lowest - flame tip light blue almost imvisible is hotest.
I've got the same grill and was having the same problem - yellow flames coming out the front vents above the knobs. I removed the four burner tubes and they were full of soot and ash. The tubes were still in good condition so I simply knocked them with a screwdriver and a ton of black soot/ash came out. All the screws that hold them in place were so corroded they were falling apart so I had to drill them out. I cleaned everything up, put it back together with new screws and it works perfectly - nice blue flames!
If this is a natural gas grill, check to see if it has a regulator on the gas line. If it does not, you can install a regulator to reduce the gas flow.
the flames should be blue and the burners clean. check gas pressure and the air mixture dampers. touch air will give you the same effect. if the burners are clean, it is the mixture. as far as the slots in the bottom. i have not seen that. but i work on commercial ranges.
Do this..... turn on just one burner. Once the one burner is lit, turn on a second burner. If the flame in the first burner gets lower, you most likely need to replace your regulator.
Are the flames still yellow? If so the burner just needs to be adjusted which is very easy? Look at the ends of the tubes that come out of the burner and end right at the back of the gas controls. You should see a small piece of metal that will slide or spin to close a hole. You want to close or open it a little at a time while the grill is burning. Adjust this until you only see blue flame or blue flames with a little bit of a yellow tip.
It sounds like the orifice is bad. An orifice is a small metal part that has a small hole in it. This regulates the gas coming out to the burner. It is at the tip of the pipe that brings gas to the burners, before the flame. I don't know what the hell the garggley noise is. Unless the bottle is upside down, and you are getting liquid, I don't know.
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