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What colour is your spark?

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    What colour is your spark?

    When checking for spark on 83-86 550s what colour is your spark?
    IS it fat and blue?
    Is it whitish? Yellow?

    I ask this as I have been told that electronic ignitions do not produce a blue spark but rather a lighter less visually intense one.

    #2
    Yellowish is a weaker spark. A good robust blue is perfect. Just my opinion.
    1983 GS1100E, 1983 CB1100F, 1991 GSX1100G, 1996 Kaw. ZL600 Eliminator, 1999 Bandit 1200S, 2005 Bandit 1200S, 2000 Kaw. ZRX 1100

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      #3
      I don't think I've ever had a fat blue spark on my GSs. More white/yellow. Seems to run fine that way and all my ignition components are in good nick (tested through-and-through).

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        #4
        I've been wondering how to test the quality of the spark.

        I've got a DVM, but it only goes to 1,000 DCV and 500 ACV.

        Anyone?

        Charles...

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          #5
          I have two forms of spark. Running spark and non-running spark. :-D
          1983 GS 1100E w/ 1230 kit, .340 lift Web Cams, Ape heavy duty valve springs, 83 1100 head with 1.5mm oversized SS intake valves, 1150 crank, Vance and Hines 1150 SuperHub, Star Racing high volume oil pump gears, 36mm carebs Dynojet stage 3 jet kit, Posplayr's SSPB, Progressive rear shocks and fork springs, Dyna 2000, Dynatek green coils and Vance & Hines 4-1 exhaust.
          1985 GS1150ES stock with 85 Red E bodywork.

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            #6
            Originally posted by ccs View Post
            I've been wondering how to test the quality of the spark.

            I've got a DVM, but it only goes to 1,000 DCV and 500 ACV.

            Anyone?

            Charles...
            A dvm won't work, you need an oscilloscope or perhaps your finger or another appendage.
            GSX1300R NT650 XV535

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              #7
              depends on the sample rate. iirc some car coils run in the neighborhood of 25kVDC

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