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G'Day gentlemen, Thanks for the advice. I'm happy to report that I successfully replaced the o-ring and washer as you suggested, and the engine runs normally, sans leak! For now I'm a happy camper. Jim

G'Day all, I have a V-1902 engine, marinized by the Nanni co, in our sailboat. It has arou nd 5000 hours use, and has recently started leaking fuel around the delivery valve housing (for the #1 cylinder) on top of the injector pump. Engine runs normally. There is an o-ring at the base of the...