Burner and ignition: clicks, sparks, no flame

Burner and ignition faults are the largest single share of what this van gets called out for, and most of them are cheaper than the homeowner expects. A sealed burner that sparks and will not light has a short list of causes, and three of the four common ones involve no part at all.

That is not a marketing line. It is what the van gets called out for.

The other reason this class of fault dominates is age. A great many Clay County kitchens went in together and their original electrodes have now been sparking through a decade of humid air, which opens the gap and crazes the ceramic. The same subdivision produces the same complaint within a year or two of itself.

What a clicking burner actually means

A spark module that clicks and clicks without producing flame is reporting one of four things, and only one of them needs a part.

The first is a wet or fouled electrode. Boil-over runs down the burner base, dries into a conductive film, and the spark tracks across the residue to the nearest metal instead of jumping the gap to the burner cap. The click is healthy. The spark is simply going somewhere useless.

The second is a burner cap seated a fraction of a turn off its ring. Sealed burners are unforgiving about this. Lift the cap, look at the slot pattern, seat it flat, and a burner that would not light for a week lights on the first click.

The third is a cracked ceramic insulator at the electrode. Once the ceramic is split, the spark finds ground through the crack. You can often hear the difference — a sharp snap instead of a clean tick.

The fourth is the spark module itself, and it is the least common of the four. A module that fires every position at once when a single knob is turned is usually reporting a shorted switch rather than a dead module.

Yellow flame is a mixture problem

Blue flame with a small inner cone means the air and gas ratio is right. Yellow, lazy, or lifting flame means it is not, and the cause is nearly always mechanical rather than electrical.

Checked in order: the orifice for the fuel the appliance is actually connected to, the air shutter setting, debris in the venturi, and burner port blockage. Plenty of kitchens on this side of the river run on propane rather than piped natural gas, and the orifice set has to match. A range built for one fuel and connected to the other burns wrong from the first day and never improves on its own, no matter how many times the burner is cleaned.

Simmer that will not hold

A dual-stacked burner keeps a separate low-output flame ring alive under the main one, which is why the low end can fail while the high end works perfectly. If the burner runs hard but drops out below the mid position, the fault is usually in the low port set or the valve’s simmer stop, not in the ignition system that gets blamed for it.

Flame that dies the moment the knob is released is a different circuit entirely. That is flame sensing telling the gas valve it never saw a flame. Position, oxidation and continuity get checked before the valve is condemned, because a good valve is an expensive thing to replace by guess.

What the visit looks like

The appliance gets tested on the fuel it is actually running, not on a generalisation. Electrode gap and seating first, then the flame picture, then the switch and module circuit, then supply pressure if the whole top is soft. Parts come last.

You get a written estimate before anything is ordered. Genuine OEM parts only — no aftermarket substitutes on sealed gas, ignition or control components. Ninety days on labor, 365 days on the parts themselves.