Hard-starting, rough-running equipment is frustrating and inefficient. Learn how SABER® Professional Synthetic 2-Stroke Oil helps reduce equipment operating costs and improves performance.
Anyone who’s owned or operated a two-stroke string trimmer, chainsaw, leaf blower or similar equipment has struggled with hard starts, no matter how many times you pulled the cord or adjusted the choke. If the machine finally fires up, it runs rough and threatens to stall. Read on to learn more about the cause and an effective solution.
Heavy carbon deposits in the exhaust port and on the spark arrestor screen are often to blame. Internal combustion engines require a steady supply of air to run properly and produce maximum power.
The engine draws air through the intake and burns it in the combustion chamber along with the fuel and oil. The moving piston expels the exhaust gases through the exhaust port and spark arrestor screen on the muffler. In a properly running engine, this happens thousands of times each minute and goes unnoticed by the operator.
However, two-stroke oils with poor detergency properties can allow carbon deposits to build up in the exhaust port and on the spark arrestor screen. Carbon chokes off airflow, which causes the engine to slowly lose power and run poorly. Soon, it becomes hard to start or fails to run altogether, unless you remove the muffler and clean the exhaust port and spark arrestor screen.
Most operators don’t want to waste time cleaning deposits, especially busy professionals who need their equipment to perform optimally to complete jobs quickly and efficiently.
AMSOIL Technical Writer and 20-year veteran of the motorcycle industry. Enjoys tearing things apart to figure out how they work. If it can’t be repaired, it’s not worth owning.