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Re: 59 SII engine RPM questions

To: Clayton Kirkwood <kirkwood@garlic.com>
Subject: Re: 59 SII engine RPM questions
From: Tim.Mullen@trw.com (Tim Mullen)
Date: Sun, 23 Aug 1998 12:24:43 -0400
Clayton Kirkwood wrote:

> <...> the instructions on getting an RPM reading: connect inductive lead
> around a plug wire, with specific side of pickup toward spark plug, set
> meter to RPM, set to type 2 (4cycle, non-DIS) and then start engine (at
> normal running temp). I do this and get readings in the 3000 range.
> <...>
> One thought is that because this is a positive ground system, something must
> need to change???

I would suggest reversing the direction of the inductive lead (point it a way
from the spark plug), since, in a positive ground car, the electrons are
"flowing backwards".  Try flipping it and seeing if you get a valid reading...
Then again, it may not make any change at all...

Tim Mullen


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