I can see the ignitor glowing and I start to smell gas but no ignition. Then all a sudden it lights, woop. I disconnected the gas discharge of the gas valve and no gas is coming out. I believe the gas valve is bad. The broiler side works on the gas valve.
Answer Joe it is possible that the valve is bad, but the more likely culprit is the igniter itself. I realize that you see is glowing, but when they start to deteriorate they don't draw the proper amount of amperage. It should be pulling between 3 to 3.3 amps when glowing. If they don't pull the proper amperage it won't warp the bi-metal in the gas valve correctly. It should snap open when working correctly. If it's just slowly opening it's allowing a little gas in, and then when it finally does open fully, wooosh goes the flame. What you describe is actually fairly common. I'd start with the igniter, unless you have a way to check amperage on the igniter, to prove otherwise. Thanks.