[heritagecleaning]

https://youtu.be/GQUJhkgyNj4

Looking at this you would think the jets were blocked and this was causing the backfire, but I soaked them in Viakal overnight and I can see daylight when I hold them up to the light and look through them.

All I can think of is to fit the rubber nozzle seal / o rings, but I've never used them before and things have always been fine.

I'm stumped! Any ideas?

Cheers, Owen.

[Nigel Davies]

Yes, you're right - it's the Nozzle O rings that need replacing.

[heritagecleaning]

Will give it a go, thanks. 

[Cleanevangelist]

Hi

The o ring need replace so often that you need to use a hack to get around the cost. buy new ones then use plumbers tape around them. after i did this never had to buy o rings again.

Ian Harper

[AJB]

I've only ever bought 3 seals for mine in 14 years, and 2 of them are still in the packet.