Please can someone help me with a query? I have just finished a course in boiler servicing and fault finding and have had my first call out. The burner keeps shutting off, i have put the feul gauge on the fuel pump and its reading 110 psi. I took out the burner and the fuel is getting to the nozzle. The electrodes were not sparking so i changed them and it still wasnt sparking. So then i chanaged the capacitor and everything was ok but then the next day the same thing, the boiler keeps shutting off. Can anyone with some experience in this field shed some light as i am really not sure what else the problem could be. Thanks Niall