Paint bubbles immediately after painting

[Chivas69]

123 would help, or BIN, but only after you've scraped them off. Depending on your finish colour it would also be advisable to spot the colour on any primer before a full coat just to minimise the primer itself showing through.
Peel stop is also good, especially after popping and sanding as it will help stop any loose paint spreading further

 

[terribleateverything]

I'll probably scrape, prime, do one more coat of white then do the top colour. Good job I bought 10 litres of the white paint.

Is it stupid to prime whole wall? I don't mind spending the money, and I'd rather not have to spot prime again after doing another coat...

 

[Chivas69]

Not at all, especially on a problem wall

 

[terribleateverything]

Okay in that case do I have to sand the whole wall back to underneath the old coat??