SOHC.co.uk Forums > CB650

rough idle in current freezing weather

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jimv50:
RS tools delivered new brass feeler gauges today and air gap adjusted from previous 0.85mm gap to 0.35mm.
Certainly started up on the choke better and ran a bit smoother, will have to wait for another day to see what it's like on a run.

Bryanj:
Why brass feeler gauges? what's wrong with standard steel ones

jimv50:
Nearly all the guidance on measuring the air gap in electronic ignition systems told me to use the non-magnetic feeler gauges.
I certainly don't know the science behind what may go wrong but for the sake of a few Euro I wasn't taking the risk of either shorting something out or just plain not measuring the gap correctly, and I get another tool in the bike tools box  ;D

PS where in Glos are you, I was born in Thornbury

totty:
Apparently some sensors can be knacked by magnetisng them with feeler gauges. I looked it up when I wondered why I had one brass feeler in a set.

Bryanj:
Didn't know you had electronic ign, Im just south of glos near junct 12

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