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Daewoo espero cutting out

ON DAYS above 34C my 1996 Daewoo Espero cuts out. I can restart it after about 10 minutes, so it's not much good calling out the motoring club. It feels as if it's lacking fuel and the serviceman who checked it thought it was fuel vapourisation. The motoring club's technical service thought it was more likely to be dirty injectors. The car is regularly serviced and no fault has been found. Any thoughts?

IT DOES sound like fuel vapourisation and there could be several causes, but I doubt dirty injectors would be one of them. I would expect dirty injectors to cause poor running at all times and not just when the mercury rises. You could try running on premium unleaded and see if that helps. You could also check the fuel pressure regulator and the fuel pump. And look for places where the fuel in the fuel lines could be subjected to heat that might cause it to vapourise on the way to the engine.

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