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Re: yellow spark & miserable compression

To: libertyc <>
Subject: Re: yellow spark & miserable compression
From: "Michael D. Porter" <>
Date: Wed, 31 Jul 1996 01:06:37 -0700
References: <> <> <>
libertyc wrote:
> Micheal - Even when my plugs were brand new, I had this miss.  I've
> checked carb and valve gaps, changed out plugs, wires, rotor, cap, and
> condenser.  I'm thinking its still ignition related.  Perhaps new coil
> and electronic ignition?  Plugs 6 and 2 aren't significantly wetter than
> others.
> Thanks for feedback.
> You're welcome.  I notice in the list of parts you mention above, you 
don't mention points.  I suppose that's an oversight.  If the points are 
partially grounded (from dirt and/or wear), you could be bleeding a 
little current off to ground all the time, which would either make the 
coil quit completely, or be very weak; or the coil could be on its way 
out, period.  Most fail fairly quickly once they begin to short 
internally, but I have seen some take a while before they went completely 

If you don't have one, I'd really suggest getting a cheap digital 
ohmmeter (they can be had for about $20 in discount stores and are 
probably adequate for occasional use) and start checking for shorts to 
ground all through the primary circuit.  Once you know that everything is 
okay there (i.e., proper voltage at the coil power terminal, ground when 
the points are closed at the ground terminal of the coil, and high 
resistance when the points are open), then you can be fairly certain that 
the coil is making life difficult for you.  

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