Thanks for all the advice. I didn't expect my original post to generate a discussion on cat litter and boiler room paint!
Some of you asked me to report on the resolution of the problem.
The engineer came today, the boiler had been off for 5 hours and when he felt around the pump casing he got...
Gazzt
Thanks but definitely not the toilet. We are on our own septic tank, the only smells from the toilet are the normal ones! Preferable to oil fumes......just!
Thanks for the three replies from Best, Gazzt and Last Plumber.
The burner is an R.B.L model RDB1 70 -90
The copper pipe comes under ground from the tank, I presume it is sleeved all the way, it is at the start.
It comes up out of the ground and then through the wall of the house and...
Ron
Thanks for the comprehensive reply; answers to your questions:
Boiler was serviced in September, I don't don't know if the nozzle or filter were changed.
The oil tank is outside and very remote from the house.
I don't think it is fumes as it was at it worse when we returned from two weeks...
This boiler is 13 years old and housed in the downstairs WC. Recently it began to smell strongly of oil (I don't think fume, see later) my engineer could find nothing wrong. We went away for two weeks and the boiler was turned off; on our return the smell was very very bad (obviously not fume)...
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