To much air flow, pilot problem - Blodgett DFG-100 Gas Single Oven

There seems to be a problem in the pilot light, possibly an obstruction.

Make sure the thermocoupler is being heated by the pilot light flame. It could also be gunked up but you can clean it with a scouring pad, or it might need to be replaced. The thermocoupler is the most likely cause because if it isn't heated then the gas valve will not open up and no gas will flow to the burner. Since your pilot light is on then you do have gas to the valve.

Most likely culprit is the igniter.
When you turn the oven on it opens a gas valve allowing a small amount of gas to flow thru the pilot light. The igniter then lights the pilot and when the sensor determines the pilot is lit it opens th emain gas valve and the oven lights. If the igniter fails and doesn't light the pilot the sensor doesn't heat up and it shuts down the pilot and nothing works.
The igniter is usually accessable under the oven by removing the drawer. It has a single wire attached and looks like a short cigarette made of ceramic witha metal tip.
You didn't provide model number so I can't give you part number but if you look it up here you may be able to get one from Sears
http://www.searspartsdirect.com/partsdirect/index.action?sid=PSHx20080114x00001

First pull out the broiler pan and look into the boiler and in the very back you will see there is the receptacle or the pilot light assembly. You will simply stick a match up to the pilot light and "poof" the pilot light is lit. Now if it doesn't light, sometimes you can just move this a little bit and get a little bit gas flow through there and in this case, it did light properly. And then now test the oven. Push in on the valve and turn it.
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If your oven still uses a pilot light, it also probably has a thermocouple positioned in the pilot's flame path to detect whether if is safe to turn on the main burner. When the thermocouple fails, the oven thinks the pilot light is not lit and will not let gas flow to the primary burners. The part isn't costly (should be <$20 US) but replacing it may require some expensive labor.

OK, you will need to watch the pilot when you turn the temp control. It should get longer and give heat to a coupler that should be attached to your gas valve. If the pilot does not extend when you turn the temp control then the temp control is bad. if it does then your valve is bad.

I hope I got the right kind of machine doing this blind.

wire brush the oven pilot light orifix flame may be lessened due to carbon buildup then when oven lights its convextion pulls the pilot flame away from thermal coupling with shuts off gas (in case wind blows it out, it will STOP the GAS FLOWING. if the pilot full size (near 3/4 inch tall) then just try to position the thermal coupling nearer the flame (not right on it)

In general lets be clear. The OVEN pilot is located under the oven door at the top of the Broiler.It is a small piece of metal just before the GAS safety Valve which acts on temperature so gas won't flow unless Pilot is lit,That's the OVEN PILOT.The stove's RANGE is the top burners where you heat Pots and Pans.It has either 2 Pilot lights that connect the burners to the Flame they are under the Range Top.Newer Models use electronic ignitions no flame.Please note if you had your stove/oven disconected or Gas off when you turn it back on there will be air in the line that needs to escape before you light.This is why in NYC when Utility Co.works on steet main the MUST re-light your appliances.Be Careful with Gas.Good Luck.

If this oven has a "stack" (where the hot gases & heat vent to your hood) air could be blowing down the stack affecting the pilot. Simple test, Bic lighter lit at the top of the stack in the middle of the opening. If the flame is being sucked down the stack, then you have air blowing the pilot out. How old is the thermocouple on this unit ? Pilot flame heats this up to send a signal to your main gas valve to open up so the burners light. A weak t-couple could be your problem. Hope this helps

does it light then immediately go out? if yes, usually you have to hold in a button to allow gas to flow while you light the pilot, and hold this button until the therm0-couple is heated with the pilot flame. If the thermo-couple is not sufficiently heated and you let go of this button, the pilot light will go out as the safety circuit thinks there's no flame and unburned gas is entering the oven.

The other thing you could do is adjust the height of the pilot flame... there's usually an adjustment screw near the button described above which will allow you to adjust the height of the flame. Make the flame just big enough to guarantee that it keeps the thermo-couple hot AND that it can light the oven without being blown out.

Good luck.