[Healeys] Austin Healey 100 Misfire Diagnosis.

[Stephen Hutchings]

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
>> 
>> 
>> _______________________________________________
>> Support Team.Net http://www.team.net/donate.html
>> Suggested annual donation  $12.75
>> 
>> Archive: http://www.team.net/pipermail/healeys http://autox.team.net/archive/healeys
>> 
>> Healeys at autox.team.net
>> http://autox.team.net/mailman/listinfo/healeys
>> 
>> Unsubscribe/Manage: http://autox.team.net/mailman/options/healeys/michaelsalter@gmail.com
>> 
> _______________________________________________
> Support Team.Net http://www.team.net/donate.html
> Suggested annual donation  $12.75
> 
> Archive: http://www.team.net/pipermail/healeys http://autox.team.net/archive/healeys
> 
> Healeys at autox.team.net
> http://autox.team.net/mailman/listinfo/healeys
> 
> Unsubscribe/Manage: http://autox.team.net/mailman/options/healeys/s.hutchings@rogers.com
> 
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://autox.team.net/pipermail/healeys/attachments/20221005/1c73507b/attachment.htm>