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Old 14 May 2011
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A jawa 638 problem from Georgia

Hi my name is Can, i am on a multi-country trip. at the moment in Georgia. actually bike is running well until now. but started burning sparks at 25-30 km. also signals not blinking regularly, frequency is changing -its more old problem, probably couse of signal regulator?-. 2 of them may be related? or spark one is just by fuell or timing? in fact i can change the fuell to probe but dont have space for 15 lt it is going to waste.

1992 jawa 638 pointer ignation.

sorry for bad english.

thanks.
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Old 14 May 2011
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Could be a voltage regulator problem causing both issues - does the indicator flashing frequency change with engine speed?
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Old 15 May 2011
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yes while idle more low frequency blinking, after 3000 rpm no blinking

ok then i will replace regulator

thanks, i hope it solves
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