Flames are mostly yellow, vent black soot - Kitchen Ranges

The burner flames must be BLUE. Yellow flames will produce soot. Sounds like the burner orifice size needs to be checked.

It appears to me that the burner is no getting enough air.
The burner could have something blocking it. I've seen spider webs in types tubes. I'm not familiar with the cooker or the had pressure it should be set at. Where I live it would be a job for a licensed gas fitter. If its 2.75.kpa. Has that burner been fitted with a jet for 1.25 kpa?

Soot is caused by a few things in gas appliances. Propane even more so. Lack of combustion air is usually the culprit. In propane fired equipment orifice alignment, high pressure or the wrong burner orifice can cause yellow flames the result in soot build up. You need to find the culprit. Best to have a service tech check it out and clean it. when you know what to look for it can be easily fixed.

If you are getting soot residue, it could be a number of things, First, is this a natural gas or propane oven? If you bought an oven to be used for propane, it may need to be converted from natural gas to propane or it will soot everything up. 2nd, have you recently spilled food/liquid onto the oven burner? If the burner holes are partially plugged, the remaining holes will burn large yellow flames and soot up the oven. Check the burner flames, they should be mostly blue with little to no yellow tips. Also make sure the oven burner flames are not too big. They should never exceed the width of the flame spreader pan directly above the burner, in fact they should be less than half the width. You could also have other issues like improper air shutter adjustment to the oven burner or very low regulator pressure, but most likely it has just been spilled on recently.

Hi there.
You should inspect the fire tubes, it is a tunnel under the fry tank where the burner flames suppose to travel to heat up the oil. Your fire tubes may be clogged with soot or carbon that's why flames cannot go thru the fire tubes. Fire tubes must be free of soot or carbon deposits.
Soot build up on fire tubes can be prevented by keeping the gas pressure at standard as much as possible, low gas pressure produce yellow flame or poor flame quality and in turn will produce soot.
Also, make sure that no air or ventilation is directed towards the flue riser, otherwise, the same will result, flames rolling back towards the door.
Regards.

Yes the burner needs cleaning . Yellow is lack of air causing soot and co2 . turn off do not use . needs a service and to find out why its sooting

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!

clean the orfices and tubes and then if possible adjust your air mixture setting also

burners burning yellow , in complete combustion , blocked air ways to burner , it needs a service soon as poss

three problems with slow ignite on stoves.. first one is clean ignitors and burner caps. make sure that the caps and burners are correctly assemble. and make sure the stove is grounded correctly.. Do you flames have orange to yellow tips then there is a unburn carbon thst will form soot. soot productions is not achieving complete or efficient burning...again you may have dirty ot clogged burners..the flames should be all blue...let me know what you find out