[493dart]

Have a weak pilot flame , tried adjusting the pilot pressure screw with no change. Blue flame but its just barely touching the thermo and it eventually goes out.

Gas valve was replaced around 3 years ago with little use. Honeywell VR 8200A on a Reznor shop furnace.

Replaced pilot tube and Thermo today .....there is gas coming out of the pilot port of course .

What would you look at next ?? Inlet pressure? if the pilot pressure wont change ?

 

[user_12345a]

Did you check the pilot orifice?

Having it plugged will cause the symptoms you've listed.

After the gas valve was replaced, were the inlet and manifold pressure checked with the burners operating?

 

[yuri]

Check the inlet pressure with a manometer.

Do you have Nat gas or propane?

 

[493dart]

Did you check the pilot orifice?

Having it plugged will cause the symptoms you've listed.

After the gas valve was replaced, were the inlet and manifold pressure checked with the burners operating?

at the gas valve? I turned it on with the tube off..finger over hole and there is gas there...not a ton of pressure...but i can hear it/ feel it . The pilot tube is brand new and i did blow thru it before install

I dont have tools to check pressures

 

[493dart]

Check the inlet pressure with a manometer.

Do you have Nat gas or propane?

dont have pressure tools

Nat gas

Reznor heater

 

[yuri]

You would need to buy a manometer.

Watch this video.