- difficult engine starting;
- unstable engine operation;
- engine stalls at idle;
- increased crankshaft speed at idle;
- engine does not develop full power, insufficient engine response;
- jerks and dips in engine operation when the car is moving;
- increased fuel consumption;
- increased content of CO and CH in exhaust gases;
- pre-ignition due to leaky injectors.
You will need: a 10 mm socket head, a flat-blade screwdriver, and an autotester.
1. Reduce the pressure in the fuel system (see "Reducing pressure in the fuel system").
2. Disconnect the wire from the negative terminal of the battery.
3. Remove the air filter (see "Removal and installation the air filter").
4. Squeeze the clips and disconnect the wiring harness connectors from the injector.
Note: The pads with the wiring harness are stored in a special case.
5. Using a car tester in the ohmmeter mode, measure the resistance of the injector winding. At 20°C, it should be 14 Ohms. If the resistance of the injector winding does not correspond to the norm, replace the injector, since it cannot be repaired.
Note: Check the injector for the shape of the sprayed fuel torch and for leaks at specialized service stations, since such a check directly on the vehicle is very fire hazardous.
6. To replace injectors unscrew the two fuel rail mounting bolts.
7. Remove the ramp by removing the injectors from the holes in the intake pipe and without disconnecting the pipeline from the ramp.
8. Press the ends of the retainer with a screwdriver…
9. …and remove the injector assembly with the retainer.
10. Remove the injector from the retainer.
Attention! Each time the injectors are removed, replace the rubber sealing rings with new ones.
11. To replace the injector sealing rings remove them from the sprayer..
12. …and from the injector body. After installing new rings, lubricate them with engine oil.
13. If you are installing the old injectors, carefully wash their nozzles with solvent or carburetor cleaner.
Attention! Do not wash the injectors by dipping them in a cleaning solution, as this will damage their electrical part.
14. Install the parts in the reverse order of removal.
(Information for this article was taken from the website: FordBook.ru)