I have a Kubota L3710, last week I took it for a bath in a drainage ditch. The engine got a little water in it but nothing much. When I winched it out it only took about 20 seconds for it to fire up again. I changed the oil three times. Each time I let the engine run about five minutes. The problem is that there is a lot of white smoke coming out of the exhaust and a loss of power. I think its the injectors or timing. Any knowledge, please share.