Gas oven not lighting

Hi My oven takes up to 40 minutes to ignite. The ignighter is bright orang but no gas seems to be getting through. I have tried manually ignighting with no success. any clues Thanks Fred

Just because the ignitor glows it doesn’t mean it’s good…The ignitor must be pulling 3 amps or more before the safety valve will release. IF the ignitor is ashy or white in color replace it or test the Ac amp pull and if your under 3 amps it’s bad.