Question about 2006 Gilera Runner VX 125

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My gilera stalker 50,will rev out on the main stand ,but when i ride it on any hill it dies unless you let of the revs.the engine seems to be hunting for revs .i have cleaned the carb ,new plug and air filter.have checked the exhaust for blockages and its all clear

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Sounds like an air leak between the carb and cylinder. This would lean the fuel/air mix causing a lack of power on hills. It can also cause the bike to rev up by it's self on idle and flat surfaces. If the bike is not over 3 years old you should be able to tighten the manifold clamps and then tighten the manifold mount bolts. The rubber should still be soft enough to re-seal the connections. If over three years old the rubber seals and manifold connections are probably hard and cracked and will no longer seal properly. Just get new seals, gasket, and rubber manifold and you should be back in shape. If not, it is possible the crank seals are the problem. They can go bad and lean the mix. I mention the seals last because it is not an easy fix. I hope this helps.

Posted on Jan 23, 2010

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I have the same poroblem with my stalker. :/ it lost power the other day and when i stopped it cut out. I had to replace a spark plug to get it goin again but it only runs with the throttle open. As soon a si release it just dies. Theres plenty of compression too. Could this be the same problem? Because i was thinking of changing the idle screw, but if this is the seal problem then it could either be a nice easy fix or if its crank, an absolute nightmare :(

Posted on Apr 22, 2010

  • scowat Oct 24, 2010

    hi i have a gilera stalker 50cc and the spark plug keeps getting loads of petrol on it and doesnt start the bike i think its because i messed about with the idle screw and the over screw with the spring on the carb if any1 knows where the screws are ment to be from standard it would be alot of good to me thanks



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