I purchased a Lestec 3682 Articulating mower with a Kubota V1505 4 cylinder diesel engine (serial #1J1878), with 2770 hours on it. Every hose had a leak on it so I took all of it apart and pressure washed it. Covered all the holes to keep water out. I also replaced the oil sending unit (oil switch) because it was leaking oil out of the bolt that holds the wire. It is the Lestec part # 028547, which was matched up close as possible by a Kubota dealer with Kubota part #15841-39010.
I had every intention in replacing all the upper gaskets and seals on it since I had it apart but after taking the valve cover off everything really looked good on the whole engine, so I figure not to mess with it. However I did find a nail, yes a nail stuck against the valve push rod. After removing the nail, I use a wrench to rotate the crank just to make sure everything moved ok, and it did. I don稚 think I made any changes to the settings since none of the components such as rocker arms or anything was touched, it just went through its cycle. I replaced the valve cover and reinstalled all new filters for everything to include diesel / water separating fuel filter. After bleeding the air out of the fuel system I started up but it smoked like crazy. I let it run for a while figuring it will burn off, but it never did.
Below are some videos of before and after the engine running. Anyone have any ideas? Nothing was touched or rebuilt just replaced filters and pressure washed it.
Running before it was taken apart MVI 1702 - YouTube
Running after v1505 kubota smoking - YouTube
I had every intention in replacing all the upper gaskets and seals on it since I had it apart but after taking the valve cover off everything really looked good on the whole engine, so I figure not to mess with it. However I did find a nail, yes a nail stuck against the valve push rod. After removing the nail, I use a wrench to rotate the crank just to make sure everything moved ok, and it did. I don稚 think I made any changes to the settings since none of the components such as rocker arms or anything was touched, it just went through its cycle. I replaced the valve cover and reinstalled all new filters for everything to include diesel / water separating fuel filter. After bleeding the air out of the fuel system I started up but it smoked like crazy. I let it run for a while figuring it will burn off, but it never did.
Below are some videos of before and after the engine running. Anyone have any ideas? Nothing was touched or rebuilt just replaced filters and pressure washed it.
Running before it was taken apart MVI 1702 - YouTube
Running after v1505 kubota smoking - YouTube