Engine Compression Test

Make

Vauxhall

Model

Astra J

Section

Engine mechanics - 1.3L Diesel › Other Information › Engine Compression Test

EngineEngine Compression Test

Engine Compression Test Special Tools •  EN-46783   Thread Adapter •  EN-46791   Adapter, Compression Tool For equivalent regional tools refer to Special Tools . Removal Procedure 1. Remove the fuel injection fuel feed pipe. Refer to Fuel Injection Fuel Feed Pipe Removal - Fuel Rail to Fuel Injector . 2. Remove the fuel injector. Refer to Fuel Injector Removal .            3. Clean the injector sealing surfaces in the cylinder head using EN-47632   cleaning tool (1) in following procedure:   •  first take the brush side to loosen the dirt.   •  second take the sponge side to remove the dirt.            4. Remove the front compartment fuse block cover (1). 5. Remove the fuel pump relay. Compression Test Cylinder 1            Note:  EN-46791   adapter can only be installed in pairs along with the fuel injector (cylinder 1 and 2 or cylinder 3 and 4). 1. Install EN-46791   adapter (1) with fuel injector (2) and fuel injector bracket in cylinder 1 with a NEW fuel injector gasket. 2. Install fuel injector spherical washer 3. Install fuel injector conical washer Caution: Refer to Fastener Caution . 4. Install fuel injector bracket nut and tighten to 20 N·m (15 lb ft) . 5. Install EN-46783   thread adapter (3) to EN-46791   adapter (1).            Note:  Use a compression plotter with a measuring range of 10-40 bar (145- 580 PSI). 6. Install compression plotter to EN-46783   thread adapter . 7. Connect the battery negative cable. Refer to Battery Negative Cable Disconnection and Connection . 8. Check the compression of cylinder 1. Note:  A second technician is required.   Start engine for approximate 4 seconds. Note:  Engine speed at least 200 RPM. 9. Remove EN-46791   adapter (1) from cylinder 1. Compression Test Cylinder 2            Note:  EN-46791   adapter can only be installed in pairs along with the fuel injector (cylinder 1 and 2 or cylinder 3 and 4). 1. Install EN-46791   adapter (1) with fuel injector (2) and fuel injector bracket in cylinder 2 with a NEW fuel injector gasket. 2. Install fuel injector spherical washer. 3. Install fuel injector conical washer. Caution: Refer to Fastener Caution . 4. Install fuel injector bracket nut and tighten to 20 N·m (15 lb ft) . 5. Install EN-46783   thread adapter (3) to EN-46791   adapter (1).            Note:  Use a compression plotter with a measuring range of 10-40 bar (145- 580 PSI). 6. Install compression plotter to EN-46783   thread adapter . Note:  A second technician is required. 7. Check the compression of cylinder 2. Note:  Engine speed at least 200 RPM. 8. Start engine for approximate 4 seconds. Note:  A second technician is required. 9. Check the compression of cylinder 2 10. Remove EN-46791   adapter (1) from cylinder 2. Compression Test Cylinder 3            Note:  EN-46791   adapter can only be installed in pairs along with the fuel injector (cylinder 1 and 2 or cylinder 3 and 4). 1. Install EN-46791   adapter (1) with fuel injector (2) and fuel injector bracket in cylinder 3 with a NEW fuel injector gasket. 2. Install fuel injector spherical washer. 3. Install fuel injector conical washer. Caution: Refer to Fastener Caution . 4. Install fuel injector bracket nut and tighten to 20 N·m (15 lb ft) . 5. Install EN-46783   thread adapter (3) to EN-46791   adapter (1).            Note:  Use a compression plotter with a measuring range of 10-40 bar (145- 580 PSI). 6. Install compression plotter to EN-46783   thread adapter . 7. Check the compression of cylinder 3. Note:  A second technician is required.   Start engine for approximate 4 seconds. Note:  Engine speed at least 200 RPM. 8. Remove EN-46791   adapter (1) from cylinder 3. Compression Test Cylinder 4            Note:  EN-46791   adapter can only be installed in pairs along with the fuel injector (cylinder 1 and 2 or cylinder 3 and 4). 1. Install EN-46791   adapter (1) with fuel injector (2) and fuel injector bracket in cylinder 4 with a NEW fuel injector gasket. 2. Install fuel injector spherical washer. 3. Install fuel injector conical washer. Caution: Refer to Fastener Caution . 4. Install fuel injector bracket nut and tighten to 20 N·m (15 lb ft) . 5. Install EN-46783   thread adapter (3) to EN-46791   adapter (1).            Note:  Use a compression plotter with a measuring range of 10-40 bar (145- 580 PSI). 6. Install compression plotter to EN-46783   thread adapter . 7. Check the compression of cylinder 4 Note:  A second technician is required.   Start engine for approximate 4 seconds. Note:  Engine speed at least 200 RPM. 8. Remove EN-46791   adapter (1) from cylinder 4. Note:  Maximum pressure difference 1.5 bar (22 PSI). 9. Compare compression values from cylinder 1-4 Installation Procedure 1. Disconnect the battery negative cable. Refer to Battery Negative Cable Disconnection and Connection . 2. Install the fuel pump relay.            3. Install the front compartment fuse block cover (1) 4. Install fuel Injector. Refer to Fuel Injector Installation . 5. Install fuel Injection fuel feed pipe. Refer to Fuel Injection Fuel Feed Pipe Installation - Fuel Rail to Fuel Injector .

11 Engine