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1987 450L tuning issues?

  • Thread starter Thread starter Frogoker
  • Start date Start date
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Frogoker

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My first post on here! I have an 87 gs450l that didn't come with carbs and sat in a barn for all it's life, only 844 miles! I got some carbs on eBay, had a local shop tear them down and clean them since I don't know much about dual carb setups. I got it running roughly, it idles but the right cylinder seems like it's always loading up on fuel, the plug is wet when I remove it after idling. I removed the vacuum line from the petcock and blocked it when I found it was supplying fuel to the right carb but I still can't get it to run smoothly. It'll idle on both cylinders but bogs down on the right cylinder when I give it gas until I get to between 1500 and 2000 rpm where it surges forward like nothings wrong. What are those adjustment screws on the top front of the carbs? Something to do with the vacuum going to the baffles in each carb?
 
Those screws are for the idle circuit mixture. They should be around 2 and 1/2 turns out each. Also, you should have the carbs sync'd / balanced.
 
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