G'day,
I'm only new to this forum and it may sound like a stupid idea, but has anyone cosidered the possibility of vapour lock....Ie as all components underneath the bonnet get heat soaked the fuel lines have the same issue and the fuel is begining to vapourise prior to entering the into the cylinder. This generally causes the engine to miss under the conditions that people have described, as i have had similar symptoms in my car (s13 with RB20).
I would be interested to hear peoples opinions on this theory and what the issue was if you have fixed it ?
Cheers