I have an oil leak on my 130 Yamaha that I cannot locate. The little oil tank on the side of the motor does not leak yet oil is running down the motor and dripping on to the floor. I have checked every hose that I can find none seem to be leaking. Could this be coming from the little injection pump? Is there a gasket where it attaches to the block, and could it leak there. Any help will be greatly appreciated. Thanks