[Pluto]

I got back into the system after work and think I found the source of the leak. There is a plunger inside of the fuel solenoid shaft that is activated by 12v being applied to the fuel solenoid. When 12v is applied to the solenoid the plunger is pulled back and allows fuel to flow from a port, when 12v is removed the plunger returns and seals the fuel port with a rubber tip.

I was able to operate the solenoid and plunger by removing it from the burner head and applying 12v. The fuel valve assembly works as it should so maybe it was getting stuck and allowing fuel to pass by.

I put it back together and tried to fire it up. The burner fired off instantly but only ran for about 5 seconds before shutting off. We tried firing it up again but got nothing. I tried tracing wires using the different diagrams that we have but couldn't figure anything out. Now the beckett unit smells like it's cooked. I have no idea!

So now we're considering just replacing the entire unit. We are full time and having a new unit installed might be the best option for us. The unit has worked well for 25 years but everything has a finite life span.

Does anyone know what it would cost (approximately) to have a new unit installed?