SOHC.co.uk Forums > CB750

Petcock leaking

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Lobo:
Trig. The petcock body is perfectly well sealed to the tank - I see no reason to disturb it. The leak is ‘internal’ to the petcock, ie fuel is bypassing the selector seal and going down to the carbs. There is no external wetness anywhere.

That seal (replacement now on order) has a split between two of the holes - hence the internal weep.

(Bryan’s advice wins as he has far more (7) posts than you. He he...)

Edit - I should add the tank was painted by PO about 10yrs ago, and so I assume the tank seal renewed at that time. Somehow tho’ I doubt the selector seal was renewed...

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