Opel Frontera

Since 1992 of release

Repair and car operation

Opel of Frontera
+ Cars of mark Opel Frontera
+ Current leaving and service
- The engine
   Removal and engine OHC installation
   Removal and engine DOHC installation
   Engine dismantling
   Engine assemblage
   Head of cylinders and valves
   Pistons and rods
   The block of cylinders
   Cranked shaft and bearings of a cranked shaft
   Camshaft drive
   Engine mounts
   Compression check
   Greasing system
   Works with system of greasing of engine OHC/DOHC of 2.0 l
   Works with greasing system on the engine of 2.4 l
   The oil filter
   Oil radiator (if it is established)
   Pressure and oil temperature
+ Cooling and heating systems
+ The power supply system and release
+ Engine electric equipment
+ Coupling
+ Manual box of a gear change
+ Kardannye shaft, the main transfer
+ Brake system
+ Suspension bracket and steering
+ Body
+ Onboard electric equipment
+ Controls and operation
+ Electric equipment schemes


Compression check


The remark

To check up, whether enough valves densely adjoin at their closing, whether are worn out or piston rings are broken or there are other malfunctions in cylinders, it is necessary to spend measurement of a compression of all cylinders. For this purpose the engine should have working temperature.

1. To unscrew spark plugs.
2. To disconnect the ignition module
3. To open throttle and starting air заслонки.
4. To insert компрессометр into an aperture of the first candle.
5. To ask the assistant to squeeze out completely a pedal of gas and to include a starter.
6. To turn коленвал while компрессометр will not show the highest pressure.
7. One after another to check up in the same way other cylinders.
8. By rules компрессионное pressure in one of cylinders should not make less than 80 % from result of the maximum measurement. Low, not the identical compression on cylinders can be caused deterioration of piston rings that also it is possible to reveal under the excessive expense of oil. At a good compression results should make a minimum 7.5 атм.
If the received values come nearer or are below the resulted minimum values it specifies in necessity of carrying out of additional audit of the engine:
The difference between values of pressure of a compression of separate cylinders should not make more than 1.0 bar.
Deterioration of piston rings that should be accompanied by simultaneously raised expense of oil can be the reason of low pressure of compression.
9. At detection of a low compression in any cylinder in it the small amount of impellent oil through an aperture under a spark plug is filled in and pressure is measured. If thus pressure of compression raises, that, probably, the reason lies in deterioration of piston rings. If indications компрессиометра do not change, the reason in негерметичности landings of valves. The reason can be also in негерметичности linings between a head and the block of cylinders. In this case it is necessary to remove a head and to check up interface.
On sale there are the special liquids which introduction in cylinders raises a compression. However they should be considered as time means.
After check remove компрессиометр, screw spark plugs and tighten their moment of 20 Nanometers. Join штекерные connections of candles.