I fitted a valve to prevent the fuel constantly being recirculated through the high pressure pump. Now it has to return to the tank. It runs fine, at full temperature, without any sign of misfire - in the garage that is. Tomorrow afternoon I will take it for a run and give it a proper test.
One slightly worrying other development. I noticed that the rubber O-ring that acts as a seal on the fuel filler cap seems to have swollen making it a pain to refit the cap after filling. It's a recent problem - it's been fine up until now. I wonder if the petrol companies have been fiddling with the recipe...
Cheers, Robin
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