Nissan Primera

1990-1992 of release

Repair and car operation

Nissan Primera
+ Nissan Primera brand Cars
+ Current leaving and service
- Engine
   Removal and engine installation
   Engine dismantling
   Engine assembly
   Head of cylinders and drive of the gas-distributing mechanism
   Pistons and rods
   Crankshaft and crankshaft bearings
   Block of cylinders
   Compression check
   System of greasing of the engine - the general information
   Removal and installation of the pallet of a case
   Oil pump
   Check of pressure of impellent oil
+ cooling and heating Systems
+ the Power supply system and production of the fulfilled gases
+ System of electric equipment of the engine
+ Manual transmission, differential and main transfer
+ Automatic transmission
+ Coupling and power shafts
+ Brake system
+ Suspension bracket and steering
+ Body
+ Onboard electric equipment
+ Appendices


Compression check

If it is supposed that in the cylinder demanded pressure it is not created it is possible to check with the help компрессометра. For check unscrew spark plugs, insert компрессометр into the corresponding opening of a candle and include a starter. The indicator of the device gives value of a compression. Thanks to it not tight valves, pistons or piston rings come to light. If the engine still rather new, value of a compression has to lie within values from Specifications.

Set limits of wear should not be belittled. If a compression low, it is necessary to think of installation of other engine or its repair. Also it is very important, one cylinder has an insufficient compression or all. If, for example, the compression in one cylinder differs on 1.0 bar, maybe, that valves of the cylinder hanged and it is required to repair only a head of cylinders, i.e. valves. Also can be that piston rings lay down, and gases along the piston leave in a case. If at addition of a small amount of oil in cylinders the compression improves, it is a sign of wear of piston rings. At uniform loss of a compression cylinders are in most cases worn-out.