Diesel car engine Volkswagen Golf 4

Diesel engines — general information
The cylinder block is made of gray cast iron, the same material used to make the engine cylinders. The cylinder head is made of light alloy and is bolted to the cylinder block....

Technical characteristics of diesel engines
Engine model 1,9 SDI 1,9 TDI 1,9 TDI Engine code APZ AGR/ ALH AHF Production time, from – to 11/ 97 – 9/ 97 – 9/ 97 – Working volume, cm³ 1896 1896 1896 Power: – kW at rpm 50/...

Removal and installation of the power unit
Fuel filter for diesel engines 1 - spring clip; 2 - valve; 3 - fuel pipe; 4 - fuel pipe The engine together with the gearbox is removed from the car downwards from the engine...

Toothed belt for TDI and SDI diesel engines
1 - bolt, 120 Nm and tighten to an angle of 90°. When installing, a new bolt must be used. Turning the bolt 90° can be done in several stages; 2 - bolt, 120 Nm and tighten to an...

Removal the timing belt
Execution order 1. Remove the auxiliary poly V-belt. 2. Remove the right headlight. TDI engine 3. Remove the pipe connecting the charge air radiator and the intake manifold.

Setting the piston of the first cylinder to TDC
1. Turn the engine crankshaft so that the piston of the first cylinder is at top dead center. 2. You can turn the engine crankshaft in the following ways: raise the front of the...

Installing and tensioning the timing belt
Install and tension the timing belt on a cold engine. 1. Lower the engine and connect it to the clutch housing. 2. Check that the flywheel mark corresponding to the installation...

Checking the Timing Belt Tensioner Roller
1. Remove the upper timing belt cover. 2. Press firmly on the timing belt (arrow) and move it away from the tension roller. 3. Release the toothed belt, while the tension roller...

Removal and installation the cylinder head
Diesel engine cylinder head 1 - upper part of the toothed belt casing; 2 - toothed belt. Check the condition of the toothed belt. Before removing the toothed belt, it is necessary...

Removal and installation the intake manifold of a diesel SDI engine
SDI Diesel Engine Intake Manifold 1 - upper part of the intake manifold; 2 - screw, 10 Nm; 3 - Allen bolt, 15 Nm; 4 - O-ring. A new O-ring must be used when installing; 5 - lower...

Checking the compression in the engine cylinders
The engine condition can be checked by measuring the compression pressure in the engine cylinders. If this check is carried out regularly, it is possible to know in advance the...

Removal and installation a poly V-belt
Belt drive without air conditioning system Belt drive with air conditioning system Removal 1. Remove the lower engine compartment splash shield. 2. On a TDI diesel engine, loosen...

Checking oil pressure and oil pressure sensor
The basic steps for checking oil pressure and oil pressure sensor are given in subsection 2.1.10 . This section only covers differences related to diesel engines. To check the oil...

Removal and installation the oil pan
Oil pan and oil pump of diesel engine 1 - oil pump; 2 - oil pump sprocket; 3 - bolt, 25 Nm; 4 - chain; 5 - front cover with sealing ring. The cover is installed on the sealant...

Diagnostics of diesel engine faults
If the engine does not work, it is necessary to systematically eliminate the faults. Before identifying faults, check the presence of fuel in the fuel tank. The starter turns the...

Main faults of the lubrication system
CAUSE METHOD OF ELIMINATION When the ignition is turned on, the oil pressure indicator light does not come on The oil pressure sensor is faulty With the ignition on, disconnect...

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