Carb Spitting back fuel

john998

Well Known and Active Forum User
VOC Member
Hello, spitting back is usually caused by a week mixture, look at the carb, especial the pilot system. Regards John.
 

Puddle jumper

Well Known and Active Forum User
Non-VOC Member
Thanks for the help guys, I will try all the ideas, as for the Ignition its a Pazon system with a wasted spark, Cheers paul
 

chasbmw

Forum User
Non-VOC Member
Paul,
are you running withstandard ignition timing on the twin plugged engine?
I don't know about vincents but dual plgged airheard bmws typically work best with around 3 degrees Less advance at full revs. Static timing should be standard
Charles
 
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