Cheers for the reply

Think i might try taking the thermo stat off and boiking it to make sure its working

Not sure how you bleed the system. I tried to find this info but i was on the understanding thats why you have an expansion bottle and its got an air feed ie so when the system pumps it pumps any air to the raditor which then goes to the expansion tank and it bleed out automatically?

Not been off foad in a while and cleaned the radiator out on the vavle clearances

Flow should be fine through thr rad as i had it completely off cleaning it when i did the valves and flush it properly of old coolant.

How do i check the impeller? Can i drain the coolant and just unbolt the water pump housing?

Cap for thr rad seems to be tight as normal with the stanard hard twist to get it to close onto the stops.

Havent touch the fuelling since i got the bike, but bikes got mtc single can, k&n air filter and a kev most but theyve been on the bike for years.

Oils fine no cloudly or water hints. Oil level was ok maybe on the lower side like it had burnt a bit of oil but ive had some long trips for eg 400mil days of 70-80mph riding recently along with my commuting. But its still on the dip stick so not like its ran dry.

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Plough on