I recently switched from oil to gas in the house, and rather then get rid of the oil system, I decided to install in the garage. The system used to be a 2 line feed but have only one to it now the other being closed. The furnace will fire up, however fuel is spraying out from the inside near the area it goes into the system(just after the black block where the fuel fittings are) Can anyone help.

I found the problem. It was a bad seal on the shaft of the fuel pump, I replaced the pump and problem fixed.

I'm have problems getting my heater to fire up I bleed the line for air I got new parts a cad cell and a transmitter I install still not firing up