Car engine repair Volkswagen Polo 4

Petrol engine with a working volume of 1.2 liters
the 1.2-litre, 3-cylinder petrol engine is available in two power outputs, namely 40 kW (55 hp) and 47 kW (64 hp). The difference in power is achieved mainly by the different...

Engine timing mechanism
1.2-litre AZQ petrol engine producing 47 kW (64 hp); 1.4 litre AXU direct injection petrol engine producing 63 kW (86 hp) 1 - cylinder head with camshaft housing Do not treat the...

Cylinder head of the AZQ petrol engine with a displacement of 1.2 litres and a power of 47 kW (64 hp)
Removal instructions: Note: Removal and installation instructions apply to both 1.2L engines. Remove the engine together with the gearbox. In a car with an air conditioning...

Cylinder head — AWY petrol engine with a displacement of 1.2 liters and a power of 40 kW (55 hp)
1 - cylinder head cover Do not treat the sealing surface. The camshaft bearings are built-in. Before installation, apply sealant AMV 188 001 02 from the VW Group. When installing...

1.4 litre petrol engine with 55/74 kW (75/100 hp)
The 4-cylinder petrol engine AUA/BBY/AUB/BBZ with a working volume of 1.4 l has a cylinder block and cylinder head made of aluminum alloy. The camshafts located in the crankcase...

Toothed belt drive of the 1.4 l AUA/BBY/AUB/BBZ petrol engine with 55/74 kW (75/100 hp)
1 - Upper timing belt casing 2 - bolt, 20 Nm + 90° (¼ turn) in tightening direction Always replace the bolt with a new one. Requires VW-T1001 B clamp for releasing and tightening....

Setting the engine crankshaft to the TDC ignition position for cylinder 1
Petrol engine AUA/BBY/AUB/BBZ with a working volume of 1.4 l and a power of 55/74 kW Remove the air filter housing . Remove the upper timing belt cover. Turn the crankshaft in the...

Installation instructions for the timing belt of the AUA/BBY/AUB/BBZ 1.4 l 55/74 kW petrol engine
Caution: Removing and installing the timing belt for a 1.4 l 55/74 kW petrol engine (75/100 hp) are not described. Only the most important installation instructions are given...

Cylinder head of the AUA/BBY/AUB/BBZ petrol engine with a displacement of 1.4 l and a power of 55/74 kW (75/100 hp)
1 - Upper timing belt casing 2 - main toothed belt 3 - connecting toothed belt 4 — bolt, 10 Nm + 90° (¼ turn) in tightening direction Always replace the bolt with a new one....

1.4L AXU petrol engine with direct fuel injection
In the petrol engine with direct injection, the camshafts are driven, as in the 1.2 litre engine, by a maintenance-free chain, see also drawing N13-0758 . The intake and exhaust...

Diesel engine with a working volume of 1.4 liters
The three-cylinder block of the 1.4-I-PD-TDI diesel engine is cast from grey cast iron. PD — Pumpe-Diise-Einspritzszstem — injection system with pump injectors; TDI —...

Diesel engine with a working volume of 1.9 liters
The camshaft mounted on the cylinder head drives 8 vertically arranged valves via hydraulic plate tappets. The camshaft is driven by a toothed belt from the engine crankshaft. The...

Toothed belt drive of the 1.9 l ASY diesel engine with 47 kW (64 hp)
1 - bolt, 45 Nm 2 - engine bracket 3 - Upper toothed belt casing 4 - toothed belt If the belt is to be reinstalled, mark the direction of travel on the belt before removing it. Do...

Removal and installation the timing belt (SDI engine)
ASY diesel engine with a displacement of 1.9 liters and a power of 47 kW (64 hp) Removal Remove the top engine cover. Remove the poly V-belt . Remove the upper timing belt cover....

Cylinder head (SDI engine)
ASY diesel engine with a displacement of 1.9 liters and a power of 47 kW (64 hp) 1 - cylinder head gasket Always replace. After replacement, change all coolant. There are sealing...

Toothed belt drive (PD-TDI engine)
Diesel engine ATD/AXR/ASZ with a working volume of 1.9 liters and a power of 74/96 kW (100/130 hp) 1 - Upper timing belt casing 2 - toothed belt Before removing, mark the...

Removal and installation the timing belt (PD-TDI engine)
Diesel engine AMF/BAY/ATD/AXR/ASZ with a working volume of 1.4-/1.9 l Removal Remove the top engine cover. Remove the connecting pipe between the charge air cooler and the intake...

Cylinder head cover/cylinder head (PD-TDI engine)
Diesel engine ATD/AXR/ASZ with a working volume of 1.9 liters and a power of 74/96 kW (100/130 hp) Installing the cylinder head cover Before installing the cylinder head cover on...

Removal and installation the poly V-belt of the AWY/AZQ petrol engine with a working volume of 1.2 l
1 - bolts, 20 Nm 2 - coolant pump pulley 3 — lid 4 - tension element 5 — bolt, 20 Nm + 90° (1/4 turn) in the direction of tightening 6 - generator 7 - guide roller 8 - washer 9 —...

Petrol engine AUA/AUB/BBY/BBZ/AXU with a working volume of 1.4 l
Removal Remove the poly V-belt cover. Except for the FSI motor: use a 16 mm wrench to deflect the tensioning roller by the mounting bolt clockwise "arrows". FSI engine: Using a 16...

1.4L Diesel Engine: Removal and Installation
Removal Remove the lower engine compartment cover. Remove the inlet manifold/charge air cooler connecting pipe and the mass air flow meter. Loosen the tension of the poly V-belt....

1.9L Diesel Engine: Removal and Installation
Removal Remove the lower engine compartment cover. ATD/AXR/ASZ Engine (100/130 hp): remove the front trim right wheel arch . If there is no air conditioning compressor: loosen the...

Starting the engine
All engines Engine with manual transmission: apply the handbrake, disengage and keep the clutch disengaged, shift the gearbox to neutral. Disengaging the clutch, especially at low...

Engine fault diagnostics
Gasoline engine: when the engine does not start, a systematic approach is needed to identify the fault. In general, for a gasoline engine to start, 2 main prerequisites must...

Oil pressure control values

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