Date:         Sat, 19 Sep 2015 17:55:45 -1000
Reply-To:     "SDF ( aka ;jim lahey' - Scott )" <scottdaniel@TURBOVANS.COM>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         "SDF ( aka ;jim lahey' - Scott )" <scottdaniel@TURBOVANS.COM>
Organization: Cosmic Reminders
Subject:      Re: Cause of weak spark?
Comments: To: Angus Gordon <birdworks@GMAIL.COM>
In-Reply-To:  <4FB29DFE-FF9E-4C5E-ADE8-2F16D37960A7@gmail.com>
Content-Type: text/plain; charset=windows-1252; format=flowed

i would d o the coil-wire-to-block spark test myself,( rather than
watching the small cap spark on a spark plug.)

you want a nice fat blue spark of course...
at least 1/4 inch ..even up to 3/8 inch ..spark jumping to block.

you've redone your engine and distributor grounds , yes ?

the parts involved are ecu, distributor and Hall Sender , coil, wires
and ground of course.

"it's a blockage or leakage of fluids or electrons .."
thas all it is really.
scott

On 9/19/2015 3:21 PM, Angus Gordon wrote:
> Watching an attached plug the spark is very weak. Hall sender is fine, as the plug does fire & fuel pump pulses.
>
> Angus
>
>> On Sep 19, 2015, at 5:53 PM, Alistair Bell <albell@shaw.ca> wrote:
>>
>> Oh fine, play it that way will ya?
>>
>> :-)
>>
>> May I ask how you determined weak spark? Looking at attached spark plug and turning engine over?
>>
>> Ab
>>
>>> On Sep 19, 2015, at 5:40 PM, Angus Gordon <birdworks@gmail.com> wrote:
>>>
>>>
>>> I have cut the wires back - new connectors. Forgot to mention.
>>>
>>>
>>>
>>>
>>>> On Sep 19, 2015, at 5:21 PM, Alistair Bell <albell@shaw.ca> wrote:
>>>>
>>>> Cut back the old wires to coil and re crimp new connectors. Just in case you are getting the situation of bad connection causing voltage and current drop during operation, even though the static voltage measurement checks out.
>>>>
>>>> Alistair
>>>>
>>>>> On Sep 19, 2015, at 5:12 PM, Angus Gordon <birdworks@GMAIL.COM> wrote:
>>>>>
>>>>> '86 syncro
>>>>>
>>>>> I'm looking to solve a weak spark problem. Battery voltage is present at the coil (D15 power currently coming from G2).
>>>>> Coil has been swapped.
>>>>> New dist. cap and coil wire (swapped).
>>>>> Grounds re-cleaned below coil.
>>>>>
>>>>> Am I correct that the coil ground is through ECU pin 19? Under the coil?
>>>>> My brain is as weak as my spark right now.
>>>>>
>>>>> Thanks for any help,
>>>>>
>>>>> Angus