SOHC.co.uk Forums > CB500/550
No oil pressure.
cliff7:
On the 400 the light would be off if there was a bad connection, the same on the 500/550, surely. Disconnect wire and see.
Johnny4428:
Thanks for all help and comments, had to leave it tonight. Will check connection tomorrow.
SteveW:
Just worth mentioning. If for any reason you need to remove oil pump you can do it without draining the oil.
Just lean the bike right over against a tree on a lump of foam.
Thats how I changed the O rings in my pump, lost about a teaspoon full.
McCabe-Thiele (Ted):
Just a long shot - is there an oil pressure relief valve on a bike engine as per a car engine ?
A stuck relief valve can cause similar issues on cars.
I had a very similar problem with a Nissan 2.7 engine after an oil change - turned out to be the new oil filter none return valve was faulty. New oil filter fixed it.
Bryanj:
Relief valve is part of oil pump.
To check if pump is working remove a cam cover end cap and loosen the bolt holding the steel bracket, oil should flood out
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