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  1. J

    VOLVO B20 atomotive converted to marine, exhaust manifold smoking

    My first boat has a automotive b20 volvo with a 270 leg. Why would there be smoke coming from the top of the exhaust manifold, just where it attaches to the block right in the middle. where the engine liftout hole thing is. also because this boat has an automotive engine there is some kind of hx...
  2. J

    volvo B20 dual stromberg carbs back fire when reved

    I just got my first boat, and the motor ran and idled good but when I rev it up it back fires out the carbs. Gas and some times flames come out. it idles fine i did the timing idles even better now but cant even touch the throttle with out it back firing. any help would be good . thank you all...
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