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Over the last couple of years I have noticed the engine oil creeping up on the dip stick. I have confirmed the VST vent line doesn’t terminate in the crankcase and vents to atmosphere. Brings me to the low pressure mechanical fuel pump. I removed it from the engine and have been trying to determine if fuel is in fact leaking out the diaphragm, as far as I can tell if it is leaking out it’s such a small amount I can’t tell. I rerouted the discharge to a container, using the primer bulb and pumping the primer bulb I kept swabbing the plunger with a QTip hoping to pickup enough fuel then light the QTip figuring it would ignite faster/easier than a clean QTip. It did light a bit faster but I’m attributing that to the engine oil that the QTip picked up. Same setup only this time I manually pumped the plunger and QTiped the plunger…no fuel. Tried plugging the discharge and manually worked the plunger and pumped the primer bulb figuring if I built up pressure in the pump and gave it time it might leak fuel. No fuel that I noticed. No smell of fuel on my fingers nor in the oil at season end oil change.
Use the boat 15-20 hours/year, various RPM, minimum trolling, most hours from pulling Grandchildren on tubes and skis. I have been running it at WOT the last couple of years as much as I can but being a small lake it takes 5 minutes end to end. Have pulled the excess oil out, 300-500mls to bring the level down to the full mark. This season I only added enough oil to the halfway mark on the dipstick.
Looking for any test procedures, ideas, the service manual only has in bold letters NO SERVICEABLE PARTS replace the pump. I don’t mind replacing the pump at $200plus but would be nice knowing that my pump is leaking.
Thanks
Use the boat 15-20 hours/year, various RPM, minimum trolling, most hours from pulling Grandchildren on tubes and skis. I have been running it at WOT the last couple of years as much as I can but being a small lake it takes 5 minutes end to end. Have pulled the excess oil out, 300-500mls to bring the level down to the full mark. This season I only added enough oil to the halfway mark on the dipstick.
Looking for any test procedures, ideas, the service manual only has in bold letters NO SERVICEABLE PARTS replace the pump. I don’t mind replacing the pump at $200plus but would be nice knowing that my pump is leaking.
Thanks