My Dad has a Eurocal President boiler which I'm told is designed to run on paraffin but is also capable of running on Diesel without changing the fuel jet. Since it is really temperamental at lighting, I'm guessing this is not the case. The burner has been replaced and the settings for fuel volume has been tweaked loads of times and it still isn't right. Can anyone shed some light on the whether the jet needs replaced and if so what size.
Thanks