hot motobecane V50 stalls

My 1978 V50 stalls completely looses power when run for about a half hour to 45 minutes. Has good power till then. It starts fairly easy when cold. I have cleaned the carb, fuel system and checked the points and the plug is gapped fine. Even changed the plug. Electrical connections seem solid. Havn't changed the condenser (not sure where it is). Any ideas what might be causing the problem?

Re: hot motobecane V50 stalls

The condenser... change it.

Re: hot motobecane V50 stalls

Have you tested compression or decarbonized your piston? Is there any evidence of gasket leakage?

Re: hot motobecane V50 stalls

change the condensor

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