I managed to get a load of crud out of my radiator with a good blast of water (narrow pipe off a mains pressure hose).
But the bottom 2 or 3 rows in the core are still blocked.
Any tricks to getting these clear?
Tricks for cleaning a radiator
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Re: Tricks for cleaning a radiator
A fairly safe de-scaler is citric acid. Plug the rad outlets bar one, and fill it with the mixture boiled in a kettle. One tablespoon per litre. If you can keep the rad hot with say a fan heater, it will work quicker. But some can be so blocked only rodding it through will work.
Dave
London SW
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London SW
Rover SD1 VDP EFI
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EDIS8
Tech Edge 2Y
Re: Tricks for cleaning a radiator
I have got some proper descaler for kettles/coffee machine ect. but I wasn't sure if what ends up in radiators was limescale.DaveEFI wrote: ↑Mon Jul 26, 2021 10:40 pmA fairly safe de-scaler is citric acid. Plug the rad outlets bar one, and fill it with the mixture boiled in a kettle. One tablespoon per litre. If you can keep the rad hot with say a fan heater, it will work quicker. But some can be so blocked only rodding it through will work.
The stuff I got out so far looks more like sand! It seemed to have packed together tight enough not to move when just shaking the rad about with water in. It only budged when I got a high pressure jet of water in there.
I saw a video where a guy just used central heating flush fluid and a big drainage pump to power flush his radiator.
Re: Tricks for cleaning a radiator
'Sand' sounds like someone has used a leak sealer.
Dave
London SW
Rover SD1 VDP EFI
MegaSquirt2 V3
EDIS8
Tech Edge 2Y
London SW
Rover SD1 VDP EFI
MegaSquirt2 V3
EDIS8
Tech Edge 2Y
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Re: Tricks for cleaning a radiator
Yep, most gritty or small particle type residue is likely some sort of leak stop type product.
Re: Tricks for cleaning a radiator
This seemed to work!