Help Engine Problems

jordan · Derestricted Danger Joined: 11 Jun 2006 Karma :

Have a problem with a gilera dna 50 engine that keeps revving its self up the last time i tried it it kept revving up to 9000 and more. i have now tried it in 2 bikes and it does the same, on the second bike i tried i used only the engine and kept the carb and other bits as i know it runs ok and it did the same kept revving up on its own. i have spilt the crank and the only thing that might be wrong is the water pump seems a bit stiff but surely this wouldn't cause it to rev its self up. the only way to stop it revving up is to turn the key off.

Davo · Davo To The Rescue! Joined: 04 Apr 2004 Karma :

Have you done anything to the carb on the bike?

Sounds like you may have an air leak.

sagiliam · Could Be A Chat Bot Joined: 26 Mar 2006 Karma :

Could be something to do with the air/fuel mixture.
Ls

jordan · Derestricted Danger Joined: 11 Jun 2006 Karma :

I dont think so as the second time i put every thing on the engine from the bike that i knew was good and it still did it, put the other engine back in and it ran fine.