- difficult engine start;
- unstable engine operation;
- stop the engine at idle;
- increased idle speed of the crankshaft;
- the engine does not develop full power, insufficient engine acceleration;
- jerks and failures in the operation of the engine when the car is moving;
- increased fuel consumption;
- increased content of CO and CH in the exhaust gases;
- glow ignition due to a violation of the tightness of the nozzles.
You will need: TORX T30 wrench, flat blade screwdriver.
1. Reduce the pressure in the supply system (see «Reducing the pressure in the power system»).
2. Remove the air filter (see «Removal and installation of the air filter»).
3. Squeeze the retainer and disconnect the wiring harness from the injector.
4. Similarly disconnect blocks from other atomizers and take a plait of wires aside.
5. With a car tester in ohmmeter mode, measure the resistance of the injector winding. At 20°C it should be 12 ohms. If the injector winding resistance is not correct, replace the injector as it is beyond repair.
Note. Check the nozzle for the shape of the sprayed fuel jet and for leaks at specialized service stations, since such a check directly on the car is very fire hazardous.
To replace injectors, do the following.
6. Turn out two bolts of fastening of a fuel stage.
7. Remove the rail by removing the nozzles from the holes in the intake pipe and without disconnecting the pipeline from the rail.
Attention! If, when removing the ramp, any of the injectors remains in the intake pipe, be sure to replace the retainer for this injector.
8. Pry off the retainer with a screwdriver...
9.... and remove it.
10. Remove the nozzle from the fuel rail.
Attention! Replace the rubber o-rings with new injectors each time they are removed.
11. To replace the O-rings of the injectors, remove them from the atomizer...
12.... and from the nozzle body. After installing new rings, lubricate them with engine oil.
13. Install the parts in the reverse order of removal.