How Many Sparks?

Discussion in 'Technical Discussions' started by oldbaastard, Jun 30, 2020.


  1. Hi guys,

    Can anyone tell me if the R125 makes a spark EVERY revolution of the crankshaft? Reason I ask is that I see no position sensor for the camshaft, which would be necessary if you wanted to have a spark only on the compression stroke. And I have a bike which refuses to start even when compression is good, fuel is good, injector spray pattern good, spark is good. Just not sure it's happening on the right stroke.
    Any guidance appreciated.
     
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