helllo I have a coleman presidential furnace model #7956c856..ser.#039173844. I put a new gas valve in last year and noticed that the fire wasnt as big..?? or as hot ..? anyway not like it was with the old one it didnt blow right out of the nozzle it's just there
i didnt pay it any mind then as at least it was working but now i;m trying to find the reason for this. when lit last year before the valve change you could def. hear a difference in the amount of flame .. hope this makes sense to someone lol.