Ja si o tom zatim jen ctu, ale tohle by se te mohlo tykat:
http://mickk.net/motorcycle/documents/R ... _Notes.pdfCarburetor Backfiring
Normally caused by either a loose ignition wire, an air leak on the intake manifold, an overly lean air mixture screw
setting or clogged Pilot Jet.
Taky tam pisou, ze pokud bys musel pilot screw povolit o vic nez 3.5 otacky (zvysujes bohatost), tak potrebujes pilot jet s vetsim prumerem.
No a posouvanim jehel se meni bohatost ve strednich otackach, ale to uz jsi udelal. Kdyz jsi tam nastavil moc bohatou smes, tak to taky strilelo do sani?
Too Rich - If acceleration is crisp but the engine hesitates or staggers as the throttle is quickly closed from 3/4 to
1/2 throttle, the mixture is too rich. Lower the Jet Needle one notch (i.e. make it leaner) and repeat the test. The
needle will be correct when acceleration is crisp at mid-rpm yet the engine does not load up when you wind the
throttle back down.