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From: larry moe 'n curly on 10 Nov 2009 08:32


in2dadark wrote:
>
> Also the manual says on the 4 cyl. you can't really test them.

Not even with a coil ringer? It tests a lot more thoroughly than an
ohmmeter can.

http://www.repairfaq.org/sam/flytest.htm

http://members.ozemail.com.au/~bobpar/fbt.htm

CRT TV, car ignition coil -- same thing, basically.
From: Tegger on 10 Nov 2009 14:05
"larry moe 'n curly" <larrymoencurly(a)my-deja.com> wrote in news:6899f829-
daad-4c3d-8ce0-1441210086c2(a)y10g2000prg.googlegroups.com:

>
>
> in2dadark wrote:
>>
>> Also the manual says on the 4 cyl. you can't really test them.
>
> Not even with a coil ringer? It tests a lot more thoroughly than an
> ohmmeter can.



You can't push 20K volts through the coil using a VOM, and that's the
primary problem. You can't find degraded windings or compromised case
insulation with a tiddly little 1.5 or 3 volts.




--
Tegger

From: larry moe 'n curly on 11 Nov 2009 04:40


Tegger wrote:
>
> "larry moe 'n curly" <larrymoencurly(a)my-deja.com> wrote in news:6899f829-
> daad-4c3d-8ce0-1441210086c2(a)y10g2000prg.googlegroups.com:
>
> > in2dadark wrote:
> >>
> >> Also the manual says on the 4 cyl. you can't really test them.
> >
> > Not even with a coil ringer? It tests a lot more thoroughly than an
> > ohmmeter can.
>
> You can't push 20K volts through the coil using a VOM, and that's the
> primary problem. You can't find degraded windings or compromised case
> insulation with a tiddly little 1.5 or 3 volts.

A coil ringer can't test case insulation, at least not directly (a
megger can), but it can find bad insulation on windings. And in one
Honda forum, a person even mentioned the Bob Parker coil ringer:
http://members.ozemail.com.au/~bobpar/k7205.pdf

From: Hachiroku ハチロク on 11 Nov 2009 19:51
On Tue, 10 Nov 2009 19:05:51 +0000, Tegger wrote:

> "larry moe 'n curly" <larrymoencurly(a)my-deja.com> wrote in news:6899f829-
> daad-4c3d-8ce0-1441210086c2(a)y10g2000prg.googlegroups.com:
>
>
>>
>> in2dadark wrote:
>>>
>>> Also the manual says on the 4 cyl. you can't really test them.
>>
>> Not even with a coil ringer? It tests a lot more thoroughly than an
>> ohmmeter can.
>
>
>
> You can't push 20K volts through the coil using a VOM, and that's the
> primary problem. You can't find degraded windings or compromised case
> insulation with a tiddly little 1.5 or 3 volts.

You can by firing up the car and grabbing a hold of each wire!

Yup, you sure can! That was 34 years ago, and I can STILL feel it!!!



From: Hachiroku ハチロク on 11 Nov 2009 19:52
On Wed, 11 Nov 2009 01:40:04 -0800, larry moe 'n curly wrote:

> A coil ringer can't test case insulation, at least not directly (a megger
> can)

There's a piece of equipment I haven't used since about 1982!



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