My furnace is about 30 years old Still works fine and does the job. I know
it's not as efficient as new models, but here in Midwest it's adequate.
Just had a good look at the pilot and it seems to be a much bigger flame
than say the water heater pilot. In fact the pilot is more like a plumbers
torch. It's wasting a lot of gas.
Are the pilots adjustable in any way? I don't want to tear into it, if it's
a lost cause.
This is Turtle.
This can be done but you would have to watch what you was doing and follow what
it should look like when tring to lower it. now here is something to look for
first and it could be the cause of the long pilot lite.
Dirty Jets which the blue flame will have somewhere in it a white or yellowish
If you would like to e-masil about it here or on line here. what ever but it is
not a hard thing to do.
Listen to Turtle, he knows of what he speaks.
If you still want to try, find the gas valve (has the Off-Pilot-On knob).
Somewhere on it (often on the same surface as the knob) will be a screw
head that adjusts the pilot flame. Often it will have a cover which
pops off. Adjust it a bit at a time watching the flame. If it seems to
have no effect, return it to its original setting and look for another.
Rich Greenberg Marietta, GA, USA richgr atsign panix.com + 1 770 321 6507
Eastern time. N6LRT I speak for myself & my dogs only. VM\'er since CP-67
This is an original Hoenywell valve. It has a big head screw on the top
(back) with Adj next to it. This must be it. Almost impossible to turn it,
unless I use 90deg screwdriver.
Puzzles me that someone set that pilot, on what it seems to absolute max
setting. In the heating season, all the pilot heat stays "in the family",
but on warmer days it's wasting an expenisve fuel.
Unfortunately, I'll bet that the big pilot contributes nothing in
winter- in fact does you financial harm. By maintaining reduced draft
which sucks lots of heated indoor air up and out when main burner is
off. Unless you have an isolated system which draws air from outdoors
Your gas company should be able to send someone to adjust the flame
(and avoid damage to valve.)
On Thu, 27 Oct 2005 14:09:02 +0000 (UTC), email@example.com (Rich
Yes, that is correct. I should note that the screw is sometimes
hidden under the plastic knob on a water heater. However, you are
working on a furnace, so there is no temperature knob. Look around,
particularly near where the tiny tube (to pilot) enters the control.
Often a screw under another screw (actually a plug with slotted head).
You ARE wasting a lot of gas if your flame is that big. A normal
pilot flame is about 1/2 to 3/4 inch high, and should be blue with
some yellow. (Natural gas of Propane is about the same).
Someone may have turned that pilot way up because the thermocouple is
on it way out. If you make the pilot smaller and it keeps going out,
you need a new thermocouple (not all that hard to replace and under
This pilot has holes on the side and the flames shoot out sideways onto the
thermocouple, with quite a force. As I said, you can hear the hissing -
never heard that in a pilot, at the couple I lighted before :-)
I discovered this last summer, when I got my hand near an air outlet on the
second floor and felt a lot of warm air. I turned the pilot off at that
time. When lighting it not long ago, I was puzzled at how big it was.
That's a good possiblity, as the thermocouple appears original. Have to
find the adj first and see if it can be done.
Did a search on the web, and noticed that some of the Hoenywell furnace
valves did not mention adj pilot, while others did.
Is it possible that the valve has no pilot adj? Are all of them supposed to
Then numbers on the vavle are V8138F 1007-2 and FB1
Make sure you are not turning the Nat. Gas-L/P set screw used when/if
converted to L/P. There is a spring under the set screw and if you mess
with it without knowing what you've done you might get a bigger bill than
To close this thread - I did adjust the pilot. Adj screw was under a bigger
cap screws, in the back of the valve. The adj screw was all the way out
counter-clockwise, which allows max gas flow to the pilot. Had to make good
5-10 turns clockwise, before the pilot flame started to get smaller. Set it
such that one of the jets just covered the thermocouple. It all well now.
This frunace may have been burning gas needlesly for 30 years - what a
waste. None of the repairmen that made maintenance calls ever noticed it?.
Perhaps too lazy to make this minor adjustment - why bother after all, when
the fee is the same.
Thanks to all who helped with the advice,
HomeOwnersHub.com is a website for homeowners and building and maintenance pros. It is not affiliated with any of the manufacturers or service providers discussed here.
All logos and trade names are the property of their respective owners.