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[Healeys] Ruff running, bucking car

Subject: [Healeys] Ruff running, bucking car
From: ah at jharper.demon.co.uk (John Harper)
Date: Mon, 21 Nov 2011 08:13:33 +0000
References: <CAPT3jVs1dChKwCTDJODTBcdH6hZX0B4dEL+pTS9u5fZLTOS4yQ@mail.gmail.com> <CAPTa0B5Z0vevwFLfjX+dEYdjpJ2bFmX-9C0Q--SdHwnNUVtjaw@mail.gmail.com> <CAPT3jVvteoxis_9TGc-PJ88MA=u9fAotBdws4UZ=WQcvcbuFJQ@mail.gmail.com>
Bob

A good coil will produce a spark up to 1/2" long. A simple test when it 
is in the car is to pull out the centre lead from the disturber and 
either lodge the end so that it is about 3/8" away from the engine. The 
water tap body might be the most convenient. Then turn on the ignition 
and press the starter using the solenoid button if necessary. The 
alternative is to hold the insulated section of the HT coil lead away 
from the engine but for this I would recommend wearing rubber gloves.

In my case of loss of coil oil and overheating, I had lost almost all of 
the spark when my engine failed. It had a job to produce a spark more 
that 1/8".

Interestingly when everything had cooled down the full length spark 
returned. So in theory I could have driven another 1/4 mile or so before 
misfiring and subsequent failure.

Regards


>I'll recheck all of the leads tomorrow. Remember that EVERYTHING is new. Do
>you know of a good way to test a coil? Also, the car started bucking when
>the engine got warm - the temp here is cool and the gauge never went above
>180 - not hot. Its a points ignition
>Bob
>
>On Sun, Nov 20, 2011 at 6:47 AM, Michael Oritt <michael.oritt at 
>gmail.com>wrote:
>
>> Bob--
>>
>> You don't say if you have a solid state ignition but assuming you do not
>> and Jeff has okayed the distributor I would be checking the coil as well as
>> the integrity of connections to it.  Also carefully inspect the leads from
>> the disty to the plugs.  Please come back and keep us apprised of your
>> progress.
>>
>> Best--Michael Oritt
>>
>> On Sun, Nov 20, 2011 at 6:26 AM, Bob Abbott <thehealeyguy at gmail.com>wrote:
>>
>>> I need the group'.s help with a problem that has me stumped. Car is a 100
>>> -
>>> completely restored. Not 100 miles on it. Everything new during the
>>> restoration.
>>> Starts fine, runs smoothly,  until it warms up. It then begins to miss and
>>> buck. Its worse on acceleration but you don't need to be hard on the
>>> throttle for it to happen. Replaced the new fuel pump with another
>>> bran-new
>>> one. Sent the distributor back to Jeff to have him check his
>>> rebuild.Checked mixture, timing,float bowl level, etc. and all seem to be
>>> spot on. I'm at a loss as to what to look for next. Any and all ideas will
>>> be followed up
>>> Bob
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-- 
John Harper

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