I would try to adjust the idle speed per procedure first. Check timing as well. You never know what "tune up" means to people. 

Chris.

Wysłane z iPhone'a

Dnia Oct 9, 2014 o godz. 0:37 Stuart MacMillan <stuartmacm@GMAIL.COM> napisał(a):

> Travelling to check out a nice looking '87 Westy tomorrow, and seller says
> idle surges.  Been tuned up, new hall sensor and distributor too.  Says idle
> stabilizer hums like it should.  He may have messed up the throttle body
> switch.  Any thoughts on what to check?  I will hook up a vacuum guage and
> look for a disconnected hose.
> 
> 
> 
> Thanks!
> 
> 
> 
> Stuart