Thanks Randall,
The reason I questioned the accuracy is because it did specifically mention
disconnecting the retard unit and all US market distributors had one.
So, since my vacuum retard isn't working, then the idle can only get as low
as 1300, I assume. The 800 with retard, plus the 500 you gain with
disconnecting it. I haven't seen the 75 vacuum unit listed anywhere for sale
and I'm not
even sure how to take it off the distributor. I looks like a press fit. On a
Spitfire I had, I was able to rebuild a vacuum unit using a diaphragm out of
another unit. The parts store was nice enough to let be browse their stock to
find one of similar diameter. I may try to do that again, if I can get the unit
off.
By the way, what is the "TVS"?
Bud Trussell
> >Can someone check 86.35.15, Ignition timing adjust, paragraph
> >14-17. It says
> >to take off the retard vacuum line, then check that timing at
> >idle speed (800)
> >is per the specs on 86.35.00. The spec says 4 ATDC, but wouldn't
> >that be WITH
> >the retard line hooked up? It says right before paragraph 13 that
> >taking off
> >the retard line should increase the RPM by 500. So if you set
> >timing without
> >retard, wouldn't RPM drop to 300 after you hooked it back up?
> >Doesn't seem right.
>
> It's not. The instructions in the manual were written for non-emission
> cars, ie without vacuum retard. You need to have the retard connected and
> operating (not disabled by the TVS if present) while checking both timing (4
> ATDC) and idle rpm.
>
> Randall
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