🔍 Key Concepts

• Two-stroke diesel intake ports and how air actually enters the cylinder • What happens to loose carbon particles inside different engine systems (cylinder, valves, water jacket, lube oil) • Which engine components are actually exposed when cleaning air inlet ports on a two-stroke/cycle diesel

💭 Think About

• When you clean around the air inlet ports on a two-stroke, which passage or space are you directly opening into? Where do those ports lead? • Of the systems listed (cylinder, intake valves, water jacket, lube oil), which one would be most immediately affected by dislodged carbon at the intake ports on a two-stroke that usually has no intake valves? • Which of the listed possibilities would most likely cause rapid damage such as scoring, blow-by, or abnormal wear if carbon got there?

✅ Before You Answer

• Verify how scavenging air ports are arranged on a two-stroke diesel and what is on the other side of those ports. • Check whether a typical large two-stroke crosshead diesel has intake valves in the cylinder head or relies mainly on ports in the liner. • Consider which system—cooling water (water jacket) or lube oil—is realistically open to the air inlet passages during normal maintenance.