Recent content by colestuff

Could it be leaking O rings on the injection pump actuators?

I checked the engine and it has an electric fuel lift pump, not mechanical. I can't see how it would be leaking into the crankcase.

Duhh, of course, I completely overlooked the possibility; I'll check it out further in the morning. Thanks for the Amazon link.

Thanks, however, although I know little about this particular D722 engine, I have worked on gas engines of all sorts since 1958, and this pump doesn't have a diaphragm.

I have a Kubota ZD221 zero turn with a D722 engine. Discovered oil was leaking into the oil sump, which suggested leaky fuel injectors which I replaced. Oil is still leaking into the oil sump. The manual suggests it could also be leaking from the injection pump. I would appreciate any advice...