[AT] Ingersoll 6018

[Stephen Offiler]

Continuity isn't the best test.  The light wire on the starter solenoid
should have battery (+) voltage when you turn  the key minus a couple
tenths of a volt lost to resistance in the system.  A good test is to check
(assuming you have a decent, modern-ish digital volt meter) between the (+)
battery post  and the light wire right at the solenoid.  When you turn the
key, the meter will  tell  you what's being lost, and it should  be small,
again, a couple  or few tenths of a volt.

SO


On Sun, Nov 29, 2020 at 12:54 AM craig.warner47346 at frontier.com <
craig.warner47346 at frontier.com> wrote:

> [image: Inline image]
>
> Not particularly antique but I’m having an issue with a 1993 Ingersoll
> 6018 with an Onan P218 engine and I’m betting there will be someone here
> that knows more than I do.
>
> I used it all day yesterday. At one point when I turned key to start, the
> engine didn’t turn. There was no click, no spin...nothing. I turned key
> again and the starter acted normal. I used it the rest of the day, stopping
> and starting several times. This morning, it was back to complete silence
> when I turned the key. Messed around a bit and decided it was the ignition
> switch. Bought a new one and still nothing. Since then, I’ve:
>
> 1. Jumped from large lug to large lug on solenoid. Starter and engine
> turned like normal.
> 2. Checked continuity on small wire from solenoid to safety switch. It’s
> fine.
> 3. Checked continuity on safety switch. It’s fine.
> 4. Checked continuity on wire from safety switch to ignition switch. It’s
> fine.
>
> I’m thinking the solenoid is bad but where I’m a little confused is on
> testing the small wire that plugs into the solenoid. If the ignition switch
> is on, should there be voltage at that wire or is it a negative circuit
> that is completed by turning the ignition switch?
>
> Any help would be appreciated. I’ve attached a screenshot of the wiring
> diagram for reference.
>
>
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