Maybe somebody can help me on my carb problem. My bike:
1957 DBD34 500ccm
Standard gear box
New scrambler head (ABSAF)
Premier 932 Carb with a heat insulator
New Magneto (electronic VAPE)
High level exhaust
My problem: When the bike is hot, the idle goes up and down a lot. You drive 1 mile stop,the bike nearly dies on you. After your next stop, say 300 yards it idles at about 2000rpms. I have put on a other AMAL
, the problem is +/- the same. Due to the high level exhaust, I can't fit a Mikuni. The quality of the AMAL
is not great, for example the screws and threads don't look as if they match on idle and mixture. And I imagine it is pulling air where it shouldn't. The heat insulator is good and tight.
What carbs you have on your scramblers?
Greetings for Switzerland,