Resetting Ignition Electrode Gaps 🔥 On some boilers, you can reset the ignition electrode gap by carefully heating the electrode until it’s red hot, then gently bending it back into position. Quite a few boilers have a spark gap roughly the same as the thickness of a £1 coin 💷 — but always check the manufacturer’s instructions for the correct gap before making any adjustments. Getting this right can make all the difference between a reliable ignition and a frustrating misfire #JonesTheGas #Gas