2006 Derbi GP1 125 Logo
Anonymous
Anonymous Posted on Dec 04, 2009
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My derby gp1 open 50cc.when you put revs on dies and its getting worse.changed plug and cleaned air filter.

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  • Posted on Dec 04, 2009
Anonymous
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Hi and welcome to FixYa,

Initially, check for:

  • color of burn tips of sparkplug; if very light brown to almost whitish, then lean. Check for an air leak;
  • if black, sooty, then rich, check for a vacuum leak or oil/gas mix proportion.

Postback results of above initial tests.

Good luck and thank you for asking FixYa.

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  • Posted on Jan 30, 2015
jake hinton
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How many turns out do I need to do on my derby gp1 50cc scooter air/mixture screw??

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