You say you have an original coil and a 25D - in that case the plug gap
should be 25 and not 32. However it was increased to 35 for the 45D
distributors, even though they came with the same, 12v, coil. An increased
plug gap results in higher HT voltages which could be causing breakdown of a
marginal HT component.
Together with the hard starting and the rough running you definitely have a
problem. I would go back to first principles in setting up valves, ignition
and carbs, including checking the centrifugal and vacuum advance mechanisms
with an adjustable timing light (can be done without an adjustable, but with
one it is a doddle).
PaulH.
----- Original Message -----
From: Carl W French <cfrench@cybertours.com>
To: <mgs@autox.team.net>
Cc: <info@britbits.com>
Sent: Saturday, September 09, 2000 3:56 PM
Subject: 25d Distributor
> Ok, embarassing revelation here, I do not have any comfort level with
> the interior of my distributor.
> I would feel very comfortable to change the bearings and rings but they
are
> fine. I have an ignition problem here that I have not solved yet. I have a
> 67B pos grnd with the original 25d dizzy. It has a slight but annoying
miss
> with corrosponding loss of power more noticed up in the higher revs. Most
> noticable in the mid range of revs. I have recently replaced the cap,
> wires, coil (sport), fuel pump, The points right now are about 3-4k old.
> The problem actually seemed to come up most after changing the cap
(changed
> from wrong top mount to correct side mount) using Bumble Bee wire and moss
> plug caps. I have applied dielectric grease to all contacts and around the
> lip of the cap. I wiped out the inside of the cap and sprayed in WD40 to
> try and displace any possible water. The original coil was wired backwards
> and I have corrected that. The plugs are NGK's gapped at 32, they had been
> rich from the rear carb but I changed the float needle assembly and they
> are nice and pretty white now (too white?). Car has also been starting
very
> hard and running very rough for the first couple of miles during the same
> period.
> I hope I have given enough info here to help any one with my quandry.
>
> Carl French
>
> PS; To Frank, sorry to hear you are still typing one handed. Yes, the Inn
> was full but we got a nice spot at a Best western manger down to the
street :-)
>
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