Whilst working out how to tackle the head gasket replacement I added gasket sealer to the coolant and ran that through the engine as directed on the bottle. The result? There now seem to be no exhaust gasses getting into the coolant (the test stayed blue) and so it seems I have bought some time to get sorted.
I now need to source the right replacement gasket set. I have come up with this from the internet. Is it right?
valve stem seals
Looks more like the gasket that goes on the exhaust manifold after the cat where the exhaust bolts on.
not sure and the big thing around it all (if a gasket) would be a sump gasket at a guess.
I’d stay away from that cheap China toy store.
This is what a serious gasket set should look like and contain:
If you’re in the U.K., you could get lucky, here:
https://www.idealo.co.uk/mscat.html?q=head+gasket+daihatsu+YRV
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