SsangYong Rexton. Service manual - part 429
SSANGYONG Y200
1F2-36 M161 ENGINE CONTROLS
FUEL INJECTOR
YAA1F0C0
The Multipoint Fuel Injection (MFI) assembly is a solenoid-operated device controlled by the Engine Control
Module (ECM) that meters pressurized fuel to an each individual cylinder. The injector sprays the fuel, in precise
quantities at a point in time determined by the ECM, directly towad the cylinder intake valve. ECM energizes the
fuel injector solenoid to lift the needle valve and to flow the fuel through the orifice. This injector’s discharge
orificeis calibrated to meet the effective fuel atomization necessary for both ensuring the maximum homogeneity
in the air-fuel mixture and holding the condensation along the walls of the intake tract to a minimum.
Fuel enters the top feed injector from above and flows through its vertical axis. The lower end extends into the
intake valve. Fuel from the tip is directed at the intake valve, causing it to become further atomized and vaporized
before entering the combustion chamber.
A fuel injector which is stuck partially open would cause a loss of fuel pressure after the engine is shut down.
Also, an extended crank time would be noticed on some engines. Dieseling could also occur because some fuel
could be delivered to the engine after the ignition is turned off.
1 O-Ring
2 Injector
3 Injector Bracket
4 O-Ring
5 Fuel Rail