> Thanks. I thought about the possibility of a 180-degree error in
> installing the cap, but there is a single notch on the cap and a
> corresponging tab on the base, facing the engine, so that doesn't
seem
> possible. The little vent on the top of the new cap is 180-degrees
> from where the old one was, but in the instructions it says quite
> plainly that this doesn't mean anything.
>
> I think that perhaps the marking for Cylinder 1 must be wrong on the
> new cap. The old one had no marking at all.
With the #1 piston at top dead center, its hard to tell if its at
the end of the compression stroke, or the end of its exhaust stroke -
unless you have a valve cover off to watch the valve actuators not-
moving. Anyway, if the distributor was inserted into the block with
its shaft turned 180 degrees off, the rotor would also be pointing
180 degrees out. But, its only on the 413s and 440s that I KNOW that
is easy to do. (Have done it myself) I havent had a 318 distributor
out to look at the key. It would also be all too easy to put the
oil pump drive shaft back in wrong. It has about 18 teeth, and
should be installed with the #1 piston at tdc, and the slot that
turns the distributor facing a certain way. If someone installed the
oil pump drive shaft "off" by one or more teeth, you would have to
compensate for it: by either turning the case of the distributor to
where the terminal on the cap marked #1 was in front of the rotor
end, or by reinstalling the wires on the cap where they need to be,
not where the cap had the #1 label.
I would not expect the marking for cylinder # 1 on the cap
to be incorrect ---IF the distributor and its drive had been
installed correctly, and the distributor case was positioned in more
or less the original direction. Thats why I would fall back on
getting the #1 piston to tdc, and seeing which way the rotor points.
It would either be pointing to the position for #1 cylinder, or for
#6. This would be regardless of which way the distributor case had
been installed, or if the shaft was 180 degrees wrong, or whether
someone had put the oil pump driving shaft back in a wrong
orientation.
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