My final approach to rad cleaning.
I cheap pump (under £30), a bucket of hot water and some Irontite Thoroflush (other cleaners may also work). The pump is submersed in the bucket and pumps in the bottom hose. The flow out of the top goes into a kitchen sieve to catch any large chunks. This approach really pushes the water through.
I left it pumping for 30 mins, swapped over the inlet/outlet, refreshed the solution and went again. Much better afterwards.
If you're seriously contemplating a very expensive new rad 30 or 40 quid as a last ditch using this approach or even hot, dilute brick cleaning acid has to worth a go.
Also check your ignition timing carefully with a modern strobe that allows you to measure the current level of advance. It's easy to get it out enough to cause overheating.
I cheap pump (under £30), a bucket of hot water and some Irontite Thoroflush (other cleaners may also work). The pump is submersed in the bucket and pumps in the bottom hose. The flow out of the top goes into a kitchen sieve to catch any large chunks. This approach really pushes the water through.
I left it pumping for 30 mins, swapped over the inlet/outlet, refreshed the solution and went again. Much better afterwards.
If you're seriously contemplating a very expensive new rad 30 or 40 quid as a last ditch using this approach or even hot, dilute brick cleaning acid has to worth a go.
Also check your ignition timing carefully with a modern strobe that allows you to measure the current level of advance. It's easy to get it out enough to cause overheating.
