My oven's glow igniter was glowing but the oven would not light. There was also a strong smell of gas. I replaced the glow igniter and now the oven works but there is a strong smell of gas with the oven control off so for now I have the gas turned off at the source. I have checked for leaks using soapy water but cannot find any. Could the problem be the safety valve or the bi-metal gas valve? Thank You