SOHC.co.uk Forums > CB500/550
CB550 Tuning Advice
Neilw:
--- Quote from: K2-K6 on October 20, 2026, 07:55:32 AM ---
--- Quote from: scottly on October 20, 2026, 12:45:15 AM ---Could the rubber bits be coming from the rubber sealing washer inside the petcock?
--- End quote ---
On the auxiliary tank fuel supply ?
I don't know what config is there, but running some fuel i to clear container should show anything not desirable.
--- End quote ---
I'm using a clear auxiliary tank with a clear pipe.
K2-K6:
I was wondering if scottly was questioning if there was a petcock on the auxiliary tank, and if that had any parts in it with this potential.
I know some have a metal petcock as others have a simple plastic clamp external to the feed pipe.
Neilw:
--- Quote from: K2-K6 on October 20, 2026, 08:39:06 AM ---I was wondering if scottly was questioning if there was a petcock on the auxiliary tank, and if that had any parts in it with this potential.
I know some have a metal petcock as others have a simple plastic clamp external to the feed pipe.
--- End quote ---
Ah, yes, sorry, yes it has a petcock - i'll check that too!
McCabe-Thiele (Ted):
I have an online filter on my Auxiliary tank, just in case of contamination from the petrol can, my cans all have rubber type seals on the caps.
Must be very frustrating.
deltarider:
In general: do not position an auxiliary tank much higher than the bike's own tank. This to prevent floatvalves opening and as a consequence carbs overflowing.
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