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I need more information, but I suspect you may not have a large enough regulator on your propane line. The only way to know for sure is to attach a gauge called a manometer onto the manifold that feeds the gas burners. There is a 1/8 inch pipe fitting on the manifold for this purpose. It should read 10 inches of water column. You need a capacity to run about 300,000 BTUs when everything is on at the same time. This requires a large capacity regulator. Also the line from the regulator to the range should be at least 3/4 inch pipe.
You might have the spider syndrome. A strange but common problem is that small spiders build a tiny web that blocks the gas from flowing . They find the small hole "called the orifice" that allows that gas to flow from the end of the gas hose/tube and then enter the burner. Remove the burner and look into the orifce hole; you may see a white cotten-like blockage of the orifice hole, or sometimes the web will be buily in the end of the burner tube. Either way, this is the most likely problem.. I am assuming that the burner is not old and rusting away so that the gas is not being controlled throught the burner because the burner has rust holes in it.
Hello, Disconnect the disposable bottle and make sure the stove's gas adapter is not clogged with insect debris or something. Also make sure your bottle is not empty by trying another one just in case! Douglas
That is correct. Viking no longer supports the Cast Iron Burners. There is an aftermarket Burner VIKU1 that comes with mounting brackets to convert older Viking Grills that used a Cast Iron Burner to be able to switch to the stainless steel burner. The large bracket attaches to the center tube and has two screw holes and screws for mounting to the rear of the housing. The two smaller brackets mount to the two holes at the rear wall of the housing and create a ledge for the end of the two tubes to rest on.
It sounds like the grill just needs a good cleaning, plus when you do clean it check that the burner tubes and orfaces are free of any debris.
The orface is a tiny hole inside a small brass threaded insert where the gas blows through into the burner tubes, it is very critical that this is clear as well as the burner tubes.
How old is the grill? The size of the holes in the burner is critical. As burners age, the holes rot out, and get bigger. The velocity of the gas exiting the holes has a large effect on flame size. New burner is the most typical solution.
The connector for attaching the regulator to a disposable propane cylinder has a sintered bronze filter in the tip of the brass probe tube that is prone to clogging, or the bronze pellets get mashed down over time, restricting gas flow, and this will cause a portable grill or camp stove to perform poorly. The filter is so fine that it takes very good eyesight and bright light to see that it isn't solid metal, or use of a strong magnifying lens. The best solution is to buy a new Coleman regulator assembly. If you are unable to get a new regulator assembly and have the skills and the tools, you can try drilling a very small hole on the side of the probe tube with a #60 drill bit, just below the bronze filter, but near enough the end of the tube so that the hole will be past the plastic seal when the disposable cylinder is fully screwed into place. You should avoid drilling directly into the end of the probe tube, as the end of it is used to depress the Schrader valve in the disposable cylinder to allow gas to flow. A #60 wire gauge drill bit is only 0.040 inch (1.016 mm) in diameter, but makes a hole large enough to supply sufficient gas to a portable grill or a dual-burner camp stove. If you choose to perform this work, the probe should be unscrewed from the regulator body and the Schrader valve core in the probe tube should be removed before drilling. Be sure to clean all brass and bronze particles out of the probe tube before re-installing the Schrader valve core and the screwing the probe into the regulator. Use a removable-grade thread locking compound to secure the probe in the regulator body and don't over-tighten it, so as not to crush the rubber gasket. Allow the thread locking compound to cure for several hours before attempting to use the regulator. Keep in mind that this modification increases the likelihood of dirt getting into the needle valves and jets of your stove or grill, which can cause maintenance problems in the future.
Spiders like to create little hidey webs in the tubes of propane grills and stoves.
Take it apart as much as you can and blow compressed air through all of the holes and apertures. You can either take it to the gas station and us the $.25 air machine or buy a can of compressed air at your computer store.