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So an update , The new capacitor is fitted , had to put my own spade ends on etc but it seems to be working , No lock out on start up so far , It cost £2.60 So very happy! Also thanks for the tip about the grub screws , it turned out one was missing putting unnecessary pressure on one side of...

Does the voltage matter , I managed to get a 4 uf capacitor but is 250v , is this okay ? Got a new pump also , and found a boiler engineer that will tune it for me .

I will try my best tomorrow, my multimeter didn't have capacitance testing so still don't know for sure , Will check grub screws arnt too tight . Is it normal for the oil pump to be hot when running ?

Great , is there anywhere other than a heating supply shop that I might get one on a Saturday? Going to try my best with a multimeter tonight .

I will try phone other places for just capacitor in morning ,

£70 , can get motor and capacitor tomorrow might be Tuesday to be able to get just capacitor , my house is cold. haha

No I don't , that was going to be my next question about the pump if I will meet to get someone offtec certified to fit it ? Can I not change the motor without this ? I only ask because where I am buying it from locally tomorrow does not sell the capacitor on its own just with the motor , but I...

Thanks , I'm not great with a multimeter , .I have been able to source a new motor with capacitor , and I may aswell get a new oil pump too as it's probably well over due , I will fit these tomorrow and let you know how I get on , Thanks again.

Thanks , I will search online for more info on this now . is there any way of checking it is this and not the motor itself or the oil pump ? The oil pump does turn and is not siezed , but could I try run the boiler with the drive of the motor not attached to the oil pump ?

The problem is more burner related Worcester heatslave 15 19 oil boiler It is a bentone b9 burner made in 1999 With a danfoss bfp 21 l3 oil pump . The boiler will run fine with heating on but about 1 in every 3 or 4 times it goes to start up it will lock out , I will press the lockout button...