Kenmore Stovetop Igniter (Spark Electrode) — What Fixes a Burner That Won't Spark?
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Understanding the Problem
The Kenmore stovetop igniter (also called a spark electrode or spark igniter) creates the high-voltage spark that lights gas at each burner. When an igniter fails you will see no spark or intermittent sparking at one burner (or multiple burners). Common fixes are replacing the electrode itself, tightening or replacing corroded wiring/connectors, or replacing the spark module if several burners are affected. 1) Quick visual checks (5–10 minutes) a. Turn the range OFF, then unplug it or shut off the breaker for power to the range. Turn the gas supply OFF if you will be disconnecting gas lines (not usually required for surface burner work). b. Remove the grate and burner cap; check the electrode for visible damage, melted ceramic, carbon buildup, or the tip being pushed back into the burner. Check the wiring harness and connector for melted insulation or corrosion. c. Dry the area if you notice moisture—igniters can fail when wet or greasy. 2) Confirm whether the problem is a single electrode or the igniter system a. Plug the range back in (with burner parts reassembled but gas off or knobs in OFF) and carefully watch for a spark while turning the affected burner knob to ignite. If no spark at that burner but other burners spark, the electrode/wiring for that burner is likely bad. If no burners spark at all, suspect the spark module/ignition switch, supply voltage or a blown fuse/failed control. b. If you prefer not to power the range for this test, proceed to resistance and continuity checks with power removed. 3) Multimeter tests (power OFF and range unplugged) a. Disconnect the igniter wire from the switch/spark module. With a multimeter set to continuity/ohms, check the electrode lead for continuity to the connector. Many electrodes show continuity in the kilo-ohm range, but a completely open circuit indicates a failed electrode; a short to ground indicates insulation failure. Refer to your model’s service sheet for exact expected values. b. Test the spark module outputs (if accessible) for continuity and inspect connectors for damage. Some techs check for 120VAC at the spark module input when a knob is turned — only do this if comfortable and safe; otherwise skip and replace suspected parts. 4) Replace the faulty part (electrode or module) — electrode replacement steps a. Tools: nut driver/Phillips screwdriver, needle-nose pliers, multimeter, replacement electrode. b. Power OFF and unplug the range. Remove grate and burner cap. Remove screws holding burner head if necessary and lift the burner to access the electrode base. c. Disconnect the small wire connector from the electrode. Remove the mounting screw(s) that secure the electrode. Pull the electrode out and compare new part to old. d. Install the new electrode, secure screws, reconnect the wire, reassemble burner head and cap, restore power, and test for spark and ignition. 5) Replace the spark module (when multiple burners fail) a. Spark module replacement requires accessing the control panel or back of the range. Remove back panel or control console per model instructions to reach module. b. Photograph wiring before disconnecting. Remove connectors from the old module and transfer to the new module in the same positions. Mount the new module, reassemble, restore power, and test each burner. 6) Final checks and leak test a. After reassembly, test each burner for consistent spark and ignition. If gas smells at any time, turn gas OFF, ventilate, and do not power the range; call a pro. b. If you had to disconnect any gas line (rare for surface electrode work), perform a soap-bubble leak test on fittings while gas is on (but pilot/ignition off) and check for bubbles. Safety note: Always disconnect power before servicing electrical components. Work in a well-ventilated area, keep flames and ignition sources away while working on gas components, and if you smell gas or are uncomfortable at any step, stop and call a licensed appliance or gas technician.
Common Symptoms
No spark at one burner, intermittent sparking, weak or erratic sparks, or multiple burners failing to spark.
Common Causes
- Damaged or carbon-fouled spark electrode (tip melted, cracked, or shorted)
- Loose, corroded, or melted wiring/connectors to the electrode
- Failed spark module/ignition switch or loss of control power
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Helpful Repair Tip
If one burner spark is missing while others work, swap the electrode wire with a working burner (with power off) — if the problem moves, the electrode/wiring is the issue; if it stays, the spark module or switch is likely faulty.
Frequently Asked Questions
Why do my other burners spark but one won't?
If other burners spark normally, the issue is usually limited to that burner’s electrode or wiring. Inspect the electrode tip for damage or carbon buildup, check the connector for corrosion, and test continuity on the electrode lead. Replace the single electrode or its wiring if found defective.
How do I find the correct replacement igniter for my Kenmore range?
Use your range’s model number (usually on a tag behind the oven door, on the frame, or on the back of the range) and search the manufacturer or parts websites for 'spark electrode' or 'ignition module.' Many parts retailers allow you to enter the model number to show compatible parts; confirm the shape and mounting of the electrode before ordering.
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