Yeah, but the range of the vernier adjustment (octane compensator) is very
limited. You have to be nearly right on to make any difference.
Bill Lawrence
Mike Rogers wrote:
> > I have been advised to retard the timing by unscrewing
> > the vernier screw on the vacuum advance by half a turn
> > at a time until the knock on hills disappears.
> >
> > Is this correct. It seems a very long winded process.
>
> Before investing in my first Strobe timing light I used to do all my
> ignition timing that way, and still revert to it now from time to time (pun
> intended).
>
> So go ahead and retard a little at a time until the knock, or "pinking" as I
> have always called it disappears, you will then have an engine that is as
> correctly timed as possible within all the variables of worn parts.
>
> Mike Rogers
> Lightweight/Range Rover Hybrid
> 2A TD+I
> Keeper of the UK LRO "Who's where" list
> "If you can't get there in a Land Rover, you can't get there.
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