- unstable engine operation;
- the engine stalls at idle;
- increased or decreased 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.
You will need: hexagon «by 5», key «at 24», manometer (can tire).
1. Turn off a stopper of the union for control of pressure of fuel on an end face of a stage. Please note that an o-ring is installed in the plug of the fuel pressure control fitting. If the ring is torn or has lost elasticity, replace it or the entire plug.
2. Using the metal protective cap of the tire valve, unscrew the spool from the fitting (same as tire).
3. Connect a hose with a pressure gauge to the fitting (You can use a tire gauge). Secure the hose to the fitting with a clamp. Start the engine and check the pressure on the pressure gauge. It should be 284-325 kPa (2.9–3.3 kgf/cm2).
4. Disconnect the vacuum hose from the pressure regulator - the pressure on the gauge should increase by 20-70 kPa (0.2–0.7 kgf/cm2). Otherwise, replace the pressure regulator.
5. Reduce the pressure in the supply system (see «Reducing the pressure in the power system» in subsection «Supply system»).
6. Remove the vacuum hose from the fuel pressure regulator.
7. Turn away a nut of fastening of a tube of drain of fuel to a regulator of pressure of fuel.
8. Turn out two bolts of fastening of a regulator of pressure to a fuel stage.
9. Remove the regulator fitting from the hole in the fuel rail..
10.... and remove the regulator from the fuel drain pipe.
11. If the fuel pressure regulator o-ring remains in the rail, remove it..
12.... and put on the regulator before installation. Replace loose or torn O-ring.
13. Install the regulator in the reverse order of removal.