Jenn-Air Gas Stove burner flames too high
Burner Air Mixture Not Adjusted Properly
Some burners have an adjustable air shutter just before the orifice. If the air shutter is not adjusted properly, the flame will hiss from too much air or too little air will result in a a lazy high flame. Most newer ranges have fixed air shutters that are not adjustable.
Burner cap not on properly
The burner cap helps to distribute the gas evenly around the burner. If the cap is damaged or warped the flame can be higher on one side than the other. Inspect the burner cap for damage and replace it if necessary.
Jenn Air Range/Stove/Oven Pressure Regulator
A pressure regulator is needed on a gas range to keep the pressure constant. If the pressure regulator is not adjusted properly, or is set for the wrong type of gas, the flames can be too high. This will affect all the burners. If you suspect the regulator is bad or not adjusted properly it is best to have a qualified technician check, adjust, or replace the regulator if needed.
Wrong Orifice Installed
To work properly all burners need the correct orifice for the type of gas that is being used. If the burner flame is too high, either the gas pressure is too high or the orifice is too large. Check the parts diagram or the installation instructions for the proper burner orifice.
Jenn Air Range/Stove/Oven Orifice
All orifices are drilled and numbered according to the size of the hole. If the wrong orifice was installed in a burner, the flame can be too high. Make sure the correct orifice is installed in the burner.
Jenn Air Range/Stove/Oven Surface Burner Cap
A surface burner cap needs to be seated flat on the burner base for the flame to be evenly distributed. If a burner cap is tilted, the flames will be higher on one side than the other. If the cap is damaged, it will need to be replaced.