[Healeys] Austin Healey 100 Misfire Diagnosis.

[Alan Seigrist]

Sounds like the Lucas Gremlins reside somewhere in Ontario.  😁

On Thu, Oct 6, 2022 at 11:56 AM Stephen Hutchings via Healeys <
healeys at autox.team.net> wrote:

> Hi Michael,
> I jdrove my Healey across the country (Canada) back in 1979. I had an
> intermittent mis-fire all through Ontario., then it cleared up. When the
> car quit completely in Alberta, it turned out to be the rotor, but like
> your experience, it took a while to diagnose. This would have been an
> original Lucas rotor….so I guess they sometimes fail intermittently, like a
> coil, making the process of elimination quite difficult.
>
> Stephen BJ8
>
> Sent from my iPad
>
> On Oct 4, 2022, at 3:00 PM, Michael Salter <michaelsalter at gmail.com>
> wrote:
>
> 
> For all of those who, I'm sure, have been having endless sleepless nights
> trying to decide what could be causing my mysterious misfire problem I have
> the solution.
> It was the distributor rotor!!
> After making various other tests, I found time today to install a "mule"
> set of cap, leads and rotor and the problem was immediately resolved ...
> even to the extent that the idle speed, which I had found necessary to
> increase, needed to be readjusted back to its original settings.
> I then reinstalled the original 65 year cap, leaving the replacement rotor
> and all was well.
> My past experience with rotor failures, mostly from the poorly made cheapo
> repos, was immediate and total ignition failure. The failure of his rotor,
> a very old Lucas original, manifested itself very differently with the
> problem starting out as a very intermittent misfire which, over a period of
> several hours, became increasingly worse.
> Why the misfire vanished completely at least three times after refueling
> remains a complete mystery to me.
> Thank you to everyone who made numerous very helpful suggestions.
> All part of the "rich tapestry of life" I presume.
>
> M
>
> On Mon, Oct 3, 2022 at 7:02 PM warthodson--- via Healeys <
> healeys at autox.team.net> wrote:
>
>>
>> Has your gas tank ever been coated internally with a chemical liner?
>> Gary Hodson
>>
>>
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