A gas oven's igniter does double duty: it lights the gas and signals the valve to open. A weakening one clicks or glows without ever producing flame.
Understand the Weak-Igniter Failure
As igniters age, they draw less and less current, eventually falling short of what's needed to trip the safety valve open.
Fix: It may still glow orange without ever getting hot enough — at that point, replacement is really the only fix.
Rule Out Gas Supply
A total lack of gas will also stop the burner from lighting, so it's worth checking first.
Fix: Verify your other gas appliances are working and that the oven's own shutoff valve is open.
Replace the Igniter
Igniters are a wear item with a limited service life built in.
Fix: A technician typically swaps one in well under an hour on most ranges.
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