It won´t start when it´s cold. If the air cleaner´s removed & manually spray gas in the carb running for 20 seconds, it will then start up & run perfect. The carb´s new . How does the enricher work? When cranking the motor, I have power to the yellow wire to the enricher. I´m not sure if green wire should be grounded or what. The engine compression is 150 lbs. When cold it won´t start but fuel bowl is full of fuel. Please help, if you´ve had this problem.