Recently my steam boiler start acting up. It's a single pipe Weil McLain system. When the thermostat calls for heat it will initiate the pilot which will causes the main burners to light. Burners stays light for approx 60sec and it will shut off this is repeated several times until finally it remains lit and the cycle completes. This is a new problem and I don't know where to start. Any help would be greatly appreciated.
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