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  1. M

    Carburetor float needle

    1989 Yamaha Pro-v 150 Three Nikki Carburetors. Hi everyone, sometime ago I posted a question about popping on the start crank, and fuel ball not getting hard very hard. Yesterday I took off the carburetors again and found out that sometime the float needles didn’t close. I found out that...
  2. M

    Engine is popping, coughing, backfiring when starter cranks engine to start

    This only happens when the engine is cold, like for the first start of the morning or after it has been off for two hours, and only when the starter is cranking the engine. The engine is popping, coughing, backfiring during the starting process and stalls and doesn't want to start. When it...
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