Thread: Wieltronics CDI
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Old 11-07-2018, 01:40 AM
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Davehuge Davehuge is offline
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No, I haven't had any dealings with that CDI, however I'm interested to try and understand what's going on.

Is it possible your original CDI/stator was giving a weak spark at low rpm, your idle circuit looks to be jetted pretty lean at 38 pilot 2.5 turns out. Maybe you've had to lean it out as it could not fire with a richer/wetter mixture?

Then when you fit the replacement CDI possibly it's giving a better spark at low rpm.

I assume the engine running away, revving high is happening with the throttle closed? So this could point to a lean pilot circuit.

With the new CDI fitted, what happens if you try the air screw in further (richer) try it at 1.5 turns out. You could also try a 40 pilot to see if it solves the high revving/running away idle.

What about carb float height and operation of the float needle, have you checked these?

To be honest, personally I would prefer to stick with the original GasGas CDI unit and stator, we know these work well as long as they're not faulty!
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