The piston rings are one factor contributing to blue smoke. Piston rings are intended to prevent oil from getting into the combustion chamber, but if they wear out or break, oil can leak in and burn, producing blue smoke. Blue smoke may also be caused by the engine having too much oil in it. If the engine has received an excessive amount of oil, blue smoke may be produced while the oil burns.
The piston rings must be changed in order to resolve the problem. However, changing piston rings can be a time-consuming and costly task. In rare circumstances, replacing the engine as a whole might be more economical. It’s crucial to keep in mind that if you want to change the piston rings, you will normally need to remove the engine from the lawn mower. It is better to take your lawn mower to a professional to have the piston rings replaced if you are not familiar with engine repair. Without the right knowledge and equipment, replacing piston rings might further harm your engine.
The cost of replacing piston rings varies according to the brand and model of your lawn mower, the cost of labor in your area, and other factors. However, replacing just the piston rings is typically more economical than doing the same for the engine.
In conclusion, blue smoke coming from your lawn mower indicates a problem. The piston rings failing is the most frequent cause of blue smoke. Piston ring replacement can be a challenging task and is best left to experts. It’s advised to take your lawn mower to a professional for inspection and repair if you’re unsure of the reason of the blue smoke or if you’re not confident with engine maintenance.