The spark gap is factory set 0 125 and should be maintained.
Honeywell water heater pilot no spark.
If the pilot is restricted try removing it and clearing it with a stiff brush and or compressed air.
Example tank is a john wood 40 gallo.
The air intake is located on the bottom or side of the water heater and may need to be cleaned out in order for the pilot to stay lit.
If the pilot does not light the water heater will not heat.
The spark is small and the igniter is deep inside the base of the water heater.
When troubleshooting lighting problems it is recommended to test it first.
This cabin is off the grid and has never had power to the water heater.
Common problems and how to fix them.
The first is the air intake water heater build after 2004 have a sealed combustion chamber and air is not as easily drawn in as older models.
I was able to light it manually however very faint pilot.
Sometimes carbon deposits can build up on the pilot and eventually create a restriction.
Checking the pilot if you can see a spark make sure the gas supply valve is turned on and try lighting the water heater again.
The pilot ignites the water heater s gas burner.
Bend the white connector away from the metal pilot tube manifold tube and manifold door.
When the water heater pilot light goes out first try relighting it following the directions on the water heater label.
The water heater pilot light is a small flame that ignites the gas burner on your water heater.
How to diagnose and repair a faulty atmospherically vented gas fired water heater.
This cabin is off the grid and has never had power to the water heater.
You may have to dim the room lights to see the spark.
I am going up next weekend and will take apart and try cleaning the pilot orifice.
I can see a spark through the view window but fails to light.
If the pilot cannot be cleaned replace it.
If the pilot doesn t relight if it goes out right after lighting or if the pilot light keeps going out by far the most common.