Kemore Gas oven - trouble igniting

Question

Hi,We have a Kenmore Gas Stove/Oven that does not consistently ignite. Whether it is at the first point of turning on the oven or in the midle of baking. You hear the gas and ignitire try a few times and then stop. A few minutes later it will try a few time and ignite. Other times the oven ignites on the first try.Any thoughts?Model 665-75022102Thank you for your helpOven will not ignite. Kenmore Model 362-7556591