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 Post subject: Red spark at plugs
PostPosted: Sat Jul 25, 2020 3:16 am 
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On the street

Joined: Mon Jun 29, 2020 11:31 pm
Posts: 19
Country: New Zealand
Suzuki 2-Strokes: 74 GT550 L
I'm used to seeing a fat blue spark on bikes, my 74 GT550 shows a rather insignificant small red spark? I have just fitted some aftermarket coils, new plugs and caps. Bike is not yet ready to be started but this is the point I am up to right now. Should I be expecting a blue spark and if yes, where could my problem lie?


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 Post subject: Re: Red spark at plugs
PostPosted: Sat Jul 25, 2020 4:23 am 
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Yeah Man, the Interstate

Joined: Tue Mar 10, 2015 12:35 pm
Posts: 531
Location: Wales
Country: WALES
Suzuki 2-Strokes: suzuki gt 550j
If you are still on points my guess would be condensors need replaced. Other thing is the battery charged and in good condition. Put a multimeter across the battery and also check the positive feed to coils. Sometimes there can be a significant current drop between the battery and the coils through an old wiring loom and connectors

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98 carb Blackbird and GT550j


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 Post subject: Re: Red spark at plugs
PostPosted: Tue Jul 28, 2020 8:39 pm 
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On the street

Joined: Mon Jun 29, 2020 11:31 pm
Posts: 19
Country: New Zealand
Suzuki 2-Strokes: 74 GT550 L
Yes think you are right, new points and condensers ordered.


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