I'm troubleshooting a problem with my oven, an electric ignition gas oven. It's an old model, Whirlpool SF375BEP N2. I'm in a financial bind and replacing it is not an option at the moment.
I noticed that, although it was not working, the broiler would turn on. This made me think the problem was with the ignitor, so I replaced that. At first it seemed to work fine -- the oven turned on when I tested it, and it could even run a cleaning cycle.
But after that it wouldn't turn on, and I had to scramble to improvise for Thanksgiving. After some experimentation I found that I could just light the broiler (at the top of the inside of the oven), and after a while I was able to turn the oven on and it worked normally. But after a while even the broiler wouldn't light. I found that the same trick worked if I set the oven to a self-cleaning cycle, where it would light just fine and eventually the oven could be turned on (though if I took too long it would get too hot to slide the oven lock back and I'd have to wait).
For as long as I've had the oven it has taken a while to light the stove. The range/burners light instantly, but the oven and broiler would take maybe 15-45 seconds to light. In researching to post this question I found Why is my gas stove taking 30+ seconds to light? which (although it concerned the rangetop rather than oven below it) seemed similar enough to my underlying situation that I wonder if my problem is similar: gas feed, regulator, etc. I don't know much about working with gas -- the most I've done is to install a water heater -- so I thought I should ask here before going too far, either on my own or with a professional. (In the latter case I'd want to be sure I had the problem figured out to avoid spending the cost of a replacement on repairs.)