SOHC.co.uk Forums > CB350/400

Failing coil

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Bryanj:
Whatmake of electronic?

McCabe-Thiele (Ted):
Do you know how old your coils are?

When my 500 had a misfire that varied between one cylinder and sometimes two inspection of the HT leads showed obvious signs of age related deterioration especially near where they exit the coil.

Athame57:

--- Quote from: Bryanj on Today at 04:39:16 PM ---Whatmake of electronic?

--- End quote ---

I honestly don't know anymore. I got them from DSS years ago and they have been very good.

Athame57:

--- Quote from: McCabe-Thiele (Ted) on Today at 05:19:48 PM ---Do you know how old your coils are?

When my 500 had a misfire that varied between one cylinder and sometimes two inspection of the HT leads showed obvious signs of age related deterioration especially near where the exit the coil.

--- End quote ---

Probably about five years old.

McCabe-Thiele (Ted):
Sounds daft, have you checked in the dark for signs of HT sparking where it should not.

After the incident with the e-bike there are a few areas that might come into play.
As has been mentioned, check for loose connections, cracked plug caps or crack in a coil casing.
If it was the right side that hit the floor, any damage to the points cover, potential damage to electronic circuit board. Could you revert to points in the short term to eliminate the electronic ignition

Could petrol sloshing in the petrol tank  have dislodged enough grime to block the carbs?
Is the kill switch damaged, worth checking wires in the headlamp, ignition switch area.

I would be thinking the accident has messed something up.
Last thing are the new plugs beyond suspicion?

Hope you can sort it.

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