Advice Please ?

[JackDaniels]

hi guys,
i have a 50cc yamaha jog rr 2 Stroke

When i first ride the bike in the cold it runs really well but as the engine warms up a small flat spot develops in the acceleration range.
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THEORY TEST - PASSED! - 02-08-11 CBT Passed - 09-08-10 MOD 1 - 09-08-2011 - MOD 2 - 28-09-2011
2006 Yamaha JOGRR>2010 Yamaha Ybr>1995 Honda CB400 Superfour >2005 Honda hornet>1999 Suzuki Bandit 1200 > 2002 BMW R1150GS > 2013 Tiger Sport 1050 > 2007 GSXR 1000 > 2005 GS500E

[N cee thirty]

maybe the chokes stuck on ?
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'00 Aprilia RS50 > '92 Honda CG > '99 Yamaha Fazer > '91 Yamaha RXS > '79 Suzuki X5 > 01' Honda Cg > 07' Honda Cg > 82' Kawasaki Z200 > suzuki gsxr 400 gk73a > honda vfr 400 NC30 Mod 2 Passed 09/06/2011

Jewlio Iglesias wrote: I actually did vote BNP once

[2Smoke]

Hi, it does sound as if it could be running a bit rich. Hence why it runs great when cold but not so once warmed up.

Is it standard? I see it does 45mph, guessing it'd have been de-restricted to do that?

Air filter a bit blocked? That could be richening the mixture up a bit. Might just be a case of giving the thing a bit of a service..
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Currently in the stable.. '89 TDR250, 86 NSR250 '79 350LC, '79 DT175MX, 82, Pasola, '98 R1, '95 Speed Triple.. all of them total sheds..