Ned,
Some of the "multi function timing lights" are notoriously unreliable &
inaccurate. Before changing anything, I would check rpm with a known
good electronic tach such as used by the better service shops.
Dave Russell
Ned Smith wrote:
> Now that the engine is running reliably, I broke out my brand new, multi
> function timing light to fine tune things. This revealed a large difference
> between actual and Tach RPM. Roughly 55%. The Tach reads 1550 when actual is
> 1000, 3100 vs. 2000. The archive shows that this is adjusted by the loops of
> white wire on the back of the Tach.
>
> In this case should I have more or fewer loops? Larger or smaller diameter
> of loop?
>
>
>
> Your comments are greatly appreciated,
>
>
>
> Ned Smith
>
> BJ8
>
> near Chattanooga, TN
|