Oil smell on and off

[GaryHope]

Hi again. Having successfully solved my secondary problem it’s now time to reconsider the primary fault.

my boiler smells of oil, not always but usually.
system is 25 years old and boiler is serviced annually. Metal tank in garden with Atkinson tank-master tap. Trianco boiler in utility room. Last delivery of oil just under 4 weeks ago. Smell started only 4 days ago.

Our service chap changed the jet, cleaned the flue and reset the air flap. Runs quieter but still smells. He wouldnt go further as he couldn’t isolate the oil tank as the tap was seized.

I've managed to free off the tap and fit a new filter, it was full of crud and sludge.

Oil smell still present. No sign of any leaking or sweating.

So I’m thinking there’s either a leak I can’t find, or perhaps there’s some muck in the line or solenoid preventing a perfect shut off seal, but then why does it still smell when it’s running and when it’s not running.

I intend to either get my chap out again or to look for another technician to come for a look.

Are there any other potential sources of oil smells that may be the problem.

many thanks

gary

 

[GaryHope]

Update..

Thanks to the internet, this forum and YouTube I think I have located the source of the smell. Opened the burner cover and discovered a damp patch under the pump. Blue cloth showed it was coming from the pump its self so I suspect either an O ring or other seal has failed.

New pump seems to be around £80 and honestly look hard to fit, I assume It'll need bleeding too.

Fingers crossed and any pointers very welcomed.

thanks

 

[exedon2]

Burner will need setting up with new oil pump competent oil engineer required.

 

[GaryHope]

Burner will need setting up with new oil pump competent oil engineer required.

OK, I suspected as much but thanks for the confirmation. At least I've sourced the problem.