All original. Starts easy, runs smooth no smoke. I use it for snow plowing.
Last couple weeks it has developed a front lower engine noise/knock when under load.
When pushing easy it is smooth and quiet. As soon as it starts pushing hard a loose noise comes from lower right front of engine. It is a definite knock but with a slight ring to it. It is not upper tappet rattle. Sounds like one cylinder to me but I am not a internal mechanic. I changed the oil and filter and added a half qt. Lucas. It quieted some but is now back to where it was before the oil change.
What is it and is it ok to drive it under no load.
Last couple weeks it has developed a front lower engine noise/knock when under load.
When pushing easy it is smooth and quiet. As soon as it starts pushing hard a loose noise comes from lower right front of engine. It is a definite knock but with a slight ring to it. It is not upper tappet rattle. Sounds like one cylinder to me but I am not a internal mechanic. I changed the oil and filter and added a half qt. Lucas. It quieted some but is now back to where it was before the oil change.
What is it and is it ok to drive it under no load.