SOHC.co.uk Forums > CB500/550

Oil pressure switch

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K2-K6:
You could put a pressure guage in there temporarily to see what's really happening as it would cover both system abilities and what the light is telling you.

K2-K6:
Pressure relief valve sealing properly  ?

Seamus:
Mistake on the oil, its Rock oil, 10/40 mineral for motorcycles. Level is fine. Only flickered once this year after a hard ride. First option is to swap the switch before doing anything more complicated. If this does not help, then I will look at the pump strainer, etc
Thanks all for the advice

Yoshi823:
I had a problem with the oil light flickering on my commuter CB550F1 many years ago.
I changed the pressure switch in the first instance & it cured the problem.

matthewmosse:
I also found a new switch cured the problem in the past. I also found lightly nipping up the contact for the wire to the switch which was loose caused the switch to leak oil on one occasion. Just be sure to buy s decent switch intended for that bike so its calibrated correctly.

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