Engine exhaust assembly diagram

P3M14LJ01

This system controls the emissions, from the engine crankcase, of breather gases made up of air/petrol mixtures and burnt gases which escape from the piston seals, in addition to lubricant oil vapours, recirculating them to the inlet.

With the accelerator butterfly open, the gases from the upper cover reach the main air inlet pipe through pipe (1) inside of which there is a spark out to prevent the phenomenon of combustion due to flame returns from the butterfly casing (2).

With the accelerator butterfly closed (engine idling), the vacuum in the inlet manifold draws in the gases (in limited quantities) directly through the small pipe (4) and the calibrated port (3).

ENGINE EXHAUST ASSEMBLY DIAGRAM

P3M14LJ02