GMC Motorhome Digest V3 #250

[duane m simmons]

Richard Guthart
I just got back from a two week cruise "Down Under" & now reading e-mail.
The fact that a spark occurs at the time of releasing the start switch
indicates that current is flowing through the coil & the field collapses
as the current is terminated (that's the way that the high voltage is
normally created in the ignition system). Can not think of anything else
causing this spark.

Duane Simmons

 

[gene]

Welcome back but why did you take Lamey with you when I needed him ;>)

gene

>Richard Guthart
>I just got back from a two week cruise "Down Under" & now reading e-mail.
> The fact that a spark occurs at the time of releasing the start switch
>indicates that current is flowing through the coil & the field collapses
>as the current is terminated (that's the way that the high voltage is
>normally created in the ignition system). Can not think of anything else
>causing this spark.
>
>Duane Simmons
>
Genef -- 77PB/ore/ca
GMC MOTORHOME INFORMATION
mr.erf
http://www.california.com/~eagle/

 

[richard guthart]

Duane,

My problem turned out to be a faulty part. The moving magnet in the ignition
module assembly was too weak to trigger a spark. I diagnosed this by ordering a
second ignition and holding a compass near both assemblies. The magnet in the
first one would barely nudge the compass needle while the second one caused
big-time deflection.

Now I am the proud owner of a perfectly good spare Onan electronic ignition but
for the wimpy magnet. I doubt Onan will take it back, as I purchased it last
Nov.

BTW, the Onan starts and runs much better now with the conversion.

Richard

- ----- Original Message -----
From: duane m simmons
To:
Sent: Wednesday, January 26, 2000 7:54 PM
Subject: Re: GMC: GMC Motorhome Digest V3 #250

> Richard Guthart
> I just got back from a two week cruise "Down Under" & now reading e-mail.
> The fact that a spark occurs at the time of releasing the start switch
> indicates that current is flowing through the coil & the field collapses
> as the current is terminated (that's the way that the high voltage is
> normally created in the ignition system). Can not think of anything else
> causing this spark.
>
> Duane Simmons
>