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I have a 1987 Volvo 760 turbo wagon that has had a no start when hot problem for quite a while. Hoping to find out what is wrong now. The car is well maintained and runs very well. The problem happens in the warmer months only. When the engine is warm, after a nice drive, if you shut off the engine and try to re start it, it just cranks, but wont show any signs of starting. If I wait 15 to 20 minutes, the engine starts right up and runs perfectly. I have done some checking, and when this happens I have good spark and the fuel pumps are running and there is good fuel pressure. Someone suggested "Vapor Lock" but I don't know what would cause this ? Any help would be appreciated.
Thanks,
Mark
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