BGS technic 8401 Manual De Instrucciones página 5

Gasoline engine test result
•
At intact cylinders the pressure increases directly on start up to a peak value.
•
Check all cylinders by manufacturer's instruction, the difference between them may be up to 10%.
•
When a cylinder has no pressure and the spark plugs have traces of oil, the piston should be
checked for damage. At high combustion temperatures, for example by uncontrolled combustion
(coal oil on the spark plug) can cause damage to the piston (pitting) lead.
•
If the value is less on two adjacent cylinders than the value of the other cylinders, there is a
defective cylinder head gasket in the transition zone between the two cylinders. This is also true if
there is water and / or oil at the spark plugs.
•
If one cylinder has a lower pressure as indicated by the manufacturer, give a little engine oil into
the cylinder and run the compression test again. If the pressure rises sharply, the piston rings are
worn. If the pressure remains the same low level, the defect is a leaky valve or a defective
camshaft.
•
If the pressure indicated on all cylinders less than that stated by the manufacturer, the motor has
age-related wear and for diagnose the engine must be disassembled and measured.
•
Install all the spark plugs and cables in the correct order.
Diesel engine test
1. Start the engine for about 15 minutes until it reaches normal temperature.
2. Turn off the engine.
3. Disconnect the power supply of the injectors and remove if necessary, all injectors or glow plugs
(the details of the test method can be found in the vehicle-specific service literature)
4. Install the appropriate adapter and the gauge in the injectors or glow plug chambers.
WARNING: When testing by the glow plug chambers it is absolutely
necessary to disconnect the fuel supply. It should not be injected diesel
fuel. Otherwise there is a danger that the engine starts and it will cause
injury and damage to the tester.
5. Now start the engine for at least 4 seconds until the pressure on testers no longer rises.
6. Note the maximum value and repeat the test on all remaining cylinders (step 3 to 6)
Diesel engine test result
•
At intact cylinders the pressure increases directly on start up to a peak value.
•
Check all cylinders by manufacturer's instruction, the difference between them may be up to 10%.
•
When a cylinder has no pressure and the spark plugs have traces of oil, the piston should be
checked for damage. At high combustion temperatures, for example by uncontrolled combustion
(coal oil on the spark plug) can cause damage to the piston (pitting) lead.
•
If the value is less on two adjacent cylinders than the value of the other cylinders, there is a
defective cylinder head gasket in the transition zone between the two cylinders. This is also true if
there is water and / or oil at the spark plugs.
•
If one cylinder has a lower pressure as indicated by the manufacturer, give a little engine oil into
the cylinder and run the compression test again. If the pressure rises sharply, the piston rings are
worn. If the pressure remains the same low level, the defect is a leaky valve or a defective
camshaft.
•
If the pressure indicated on all cylinders less than that stated by the manufacturer, the motor has
age-related wear and for diagnose the engine must be disassembled and measured.
•
Install all the spark plugs and cables in the correct order.
BGS technic KG
Bandwirkerstr. 3
D-42929 Wermelskirchen
Note: For all tests should always vehicle specific data are available.
Note: For all tests should always vehicle specific data are available.
Tel.: 02196 720480
Fax.: 02196 7204820
mail@bgs-technic.de
www.bgstechnic.com
© BGS technic KG, Copying and further use not allowed