57 plate dna 50 Viper exhaust no restrictor Runs fine when cold, loses power when warmed up. Changed plug, c.d.i. Temp.sensor. Checked fuel tap(ok), Checked reeds(ok) Cleaned carb Checked and cleaned variator, belt, clutch all appear fine. No scoring of bores/piston apparent(checked through exhaust port) any ideas, please STEVE@
SOURCE: i have a gilera dna 125 4st it takes lots of turns
the spark plug possibly get back to me if thats ok
Testimonial: "its ok"
SOURCE: hi. i have a piaggio nrg mc3 ac on a 51 plate,
Check air filter and exhaust. Is it possible that someone tampered with the bike?
also maybe sticky drive belt, not acting on the variactors properly.
SOURCE: my gilera stalker 50,will rev out on the main
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.
SOURCE: Iv hot a gilera DNA 50 and it keeps overheating
under no circumstances should you remove the thermostat have you bled the air out of the systerm & are you running the correct presure radiator cap
SOURCE: Bought a gilera dna 50
If you have good spark, fuel getting through and good compression then it could be a duff plug that works when sitting on the casing but not under compression (even new plugs can do this.) If it ISN'T the plug then it can only be the timing...
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