With engine off, disconnect the idle stabilizer valve. Start the engine,
and with the engine warm, set the idle speed to 850 rpm (or by Bentley).
Then shut down and reconnect the Idle stabilizer valve. Idle stabilizer
now should be able to control the cold idle speed with rpm most likely
25 to 50 on the high side, which is ok for cold engine. Works like a
choke but isn't. It may even run faster than that, but the point is that
if the idle rpm is not at the correct setting, then the idle stabilizer
can not hold rpm where it needs to. So you have to start with the rpm
correct to begin with and that is with the valve disconnected.

If erratic idle continues, then removal and cleaning of stabilizer valve
is in order. That will probably clear up any problems.

John Rodgers
88 GL Driver

Rob Wright wrote:
>
> I have an 87 westy that I recently purcahsed that I have been working
> on. It runs well but the idle drift's around especially when it's cold.
> Where should I look first?
>
> Thanks Rob
> 87 westy weekender