A visual inspection of the chrome plated piston compression rings at the liner ports reveals vertical brown streaks on the face of the rings. This condition indicates __________.
• Chrome-plated piston rings and how they show signs of gas leakage • Difference between normal wear patterns and evidence of blow-by • How combustion gases or oil flow would mark the ring face near liner ports
• What would cause vertical streaks specifically, as opposed to circumferential scratches or chips? • If combustion gases are passing the ring, how might they discolor or mark the ring surface? • Which option describes a condition, not a single failure event (like a break), that would leave a repeated pattern on multiple rings?
• Look at the direction of the streaks and relate it to gas flow in the cylinder (up/down vs around). • Consider whether a broken ring or a leaky injector would consistently create neat vertical brown streaks on the ring face. • Ask: under truly normal conditions, would you expect visible brown staining/streaking on the ring face, or a clean, even appearance?
No comments yet
Be the first to share your thoughts!