Removing
Disconnect the negative cable from the battery with the ignition off.
This will erase the data from the electronic memory units. See instructions in chapter «electrical equipment».
Release fuel pressure. To do this, in the workshops install a special device on the valve (remove valve cap) fuel distributor pipes. Then carefully open the tap to relieve the pressure. Remove the faucet and put on the protective cap.
If there is no special tap, then pull the fuel line from the fuel filter.
Remove the plug (1) and unscrew the idle air control valve (2).
Unhook the rope" «gas» from the throttle lever from the support.
Unscrew one bolt and remove the support mount for a «gas».
Remove the intake air resonator.
Disconnect the air supply hose between the air filter housing and the intake pipe, to do this, release the two clamps.
Remove the crankcase breather hoses.
Remove the plugs of the spark plugs, unhook the high-voltage wires from the guides.
Disconnect potentiometer plug at throttle body.
Loosen the injector wiring harness bolts. Disconnect the wiring harness plug.
Pull the vacuum hose off the fuel pressure regulator. If necessary, remove the pressure regulator, for which unscrew the two bolts and pry off the regulator on the distributor pipe with a screwdriver.
Unscrew the two bolts securing the fuel distributor pipe.
Remove the fuel line bolt from the holder on the cylinder head.
Compress the side tabs of the fuel line quick couplings and pull off the fuel lines. In this case, you need to put a thick rag and collect the resulting fuel.
Note: Quick couplings are marked so that they are not confused when removed.
Pull the fuel distributor pipe together with the injectors out of the intake pipe. The nozzles are plugged in.
Pull out the side fasteners and take out the nozzles.
Installation
Replace all o-rings. To facilitate installation, lubricate the rings with clean engine oil.
Press the injectors with the fuel distributor pipe evenly into the intake pipe and insert the fastening brackets from the side.
Put the return and supply fuel hoses on the distributor pipe.
Install and bolt the fuel line holder.
Connect the vacuum hose to the fuel pressure regulator.
Connect and bolt the injector harness.
Put the plugs on the injectors.
Push the plug onto the throttle body.
Connect crankcase ventilation hoses.
Put the plugs on the spark plugs, lay the high-voltage wires and fix them in the holders. The wires are marked with numbers from 1 to 4. The wires must be installed in the appropriate cylinders. The first cylinder is located on the side of the engine V-belt (on the right when looking in the direction of travel).
Install the intake air resonator.
Install the air control valve for idle speed, put on the plug.
Install cable support «gas», insert thrust «gas» and adjust it.
Connect the negative cable to the battery, set the clock, enter the codes.
Special for 1.25/1.4l engines
Attention: Only the differences are described here, which you need to pay attention to when removing the injectors.
Caution: Fire hazard, no smoking! The fuel system is pressurized, bleed the fuel pressure using a special drain cock on the distributor pipe valve. Collect escaping fuel with a rag. If there is no tap, pull the fuel line off the filter.
Pull the vacuum hose off the fuel pressure regulator. Loosen the two screws and remove the regulator.
Pry off the middle cover of the injector wiring harness and remove the crankcase ventilation hose from the cylinder head.
Remove the plugs from the injectors.
Unscrew two bolts and pull out the injectors.
Always replace O-rings on injectors. To facilitate installation, lubricate the O-rings with clean engine oil.
