Re: 1947 Super Clipper idle problem

Posted by Dave Kenney On 2012/1/7 16:42:09

A vacuum leak usually results in increase in engine speed but a the vacuum advance is important for driveability. Have you checked the ignition timing and the condition of points etc? Would adjusting the throttle adjustment screw to give a slight increase in idle speed help. A little blowby on these engines is pretty normal.