I am having some minor power issues with an older vehicle. I found that some of the wires looked bad and replaced them. I replaced the plugs, cap and rotor about two months ago. The alterantor and battery within the last year. It seems to be running better but I am still looking at it this Christmas weekend.
In researching the electrical system I came across this link by briggs and stratton. http://www.briggsandstratton.com/support/frequently-asked-questions/Ignition System Theory and Testing/
Towards the bottom of the page is a myth section which includes information on spark color. I was considering replacing the coil this morning until I had read this. About 20 minutes after dawn the spark color came through orange (exactly orange) in the shade with poor grounding to a painted surface. At the moment I am alone working on the vehicle so I put an old (good) plug in the coil lead and placed a pair of channel locks on them against the grill near the windshield so I could see the spark as I turned the engine.
Can anyone verify this information. I have always had the understanding that the spark color should be as bright a blue as possible (to non existent except at night) in understanding that the coil is performing well or better.
I'm reluctant to spend Lord knows how much until I better understand this. Though I suppose paying the Lord knows now will save me 10 times as much for a tow these days :)
Thanks for your help. Have a Great Day!!