Oh sod it, my place on the spectrum doesnt like calling an oil boiler nozle a jet. It throws out a very high pressure shape of oil which is constantly lit in the blast tube .Some manufacturers give you a variety of profile (shape of lit flame) and up to 3 nozzle sizes which vary the heat output you may require.pre65 wrote: ↑Sat Nov 04, 2023 4:01 pm I ended up removing the burner unit, giving it a decoke, and replacing the jet with a used one from a previous service.
Seems to be cutting in and out better than yesterday/this morning, but because of the position I was working in I've strained my back.
At least I'm warm.
Gas appliances whether lpg (which has more in common with oil than gas) or methane either have injectors like motor vehicles or jets.The difference being an injector is like fuel injection in motor vehicles, and jets are a much simpler natural aspiration situation rather than forced jet like in fuel injected cars and oil nozles.
Lpg is more calorific than methane so a smaller jet is required, which blocks up. Best way to clear an lpg jet is to use a ultrasonic cleaner. You could buy a pricker for lpg blow torches, which you could substitute with a strand olucked out of a wire brush held in pliers. british Gas used to supply a set of different sized prickers which were sim8lar looking to a pencil led holder. Oil boiler nozels and car fuel injection injectors are not intended to be cleaned. But I imagine ultrasonic cleaning might work.oil nozles are les that £10 but var injectors are stupidly expensive.
The pressure of oil forsed through the nozle is set by the heating engineer by following manufacturers charts once youve identified the power option and the co2 target, typically 100 psi isnt unusual. The name of the game is to work with variables until you have the power you want whilst keeping an eye on reliabiliy.