SOHC.co.uk Forums > CB500/550

Trouble with bike

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beardylondon:
Hi All

My 550 has sat for many months due to life getting in the way.

We fitted a new coils middle of last year, it ran ok, but was a bit lumpy and spluttered.  Put it away for winter and now it wont start.
It is at my Dad's, and I haven't got time to look at for a few weeks. He is only familiar with old British bikes, he has tried all the normal things, but can't get it to start. Battery is good, fuel is good. He thinks perhaps points.

Any tips and tricky greatly appreciated.

Johnwebley:
I am not sure, but the modern petrol isn't much good in storage,

What carbs does it have?

Some can be trouble some if not used regularly

Sent from my SM-A546E using Tapatalk

Bryanj:
Need more details on what it is like year, model (K of F) etc

beardylondon:
As per my sig, 1976 CB550 K2 (USA import)

Not sure on carbs tbh, I’ll find out and report back

McCabe-Thiele (Ted):
Did you add any fuel stabiliser?
With the battery fully charged it might be worth a shot of easy start into the air box. If it fires up that might indicate petrol issues/oblocked jets.

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