Toyota Land Cruiser

FJ60, FJ62 and FJ80 1980-1997 of release

Repair and car operation

Toyota Land Cruiser
+ 1. The maintenance instruction
+ 2. Maintenance service
- 3. Engines
   + 3.1. Engines 2F and 3F-E
   + 3.2. The verhneklapannyj engine 1FZ-FE
   - 3.3. Dismantle and engine major repairs
      3.3.1. Technical characteristics
      3.3.2. Diagnostics of the engine with the help вакууметра
      3.3.3. Compression check
      3.3.4. Dismantle of the power unit
      3.3.5. Removal and engine installation
      3.3.6. Alternatives of major repairs
      + 3.3.7. An order of dismantling of the engine
      + 3.3.8. An engine assembly order
      3.3.9. Start-up of the engine after repair and обкатка
   + 3.4. An engine electric equipment
+ 4. Systems of cooling, heating
+ 5. Fuel and exhaust systems
+ 6. System of decrease in toxicity
+ 7. Transmission
+ 8. Brake system
+ 9. Suspension brackets and a steering
+ 10. A body
+ 11. An electric equipment
+ 12. Electroschemes


3.3.3. Compression check

Results of check of a compression in engine cylinders allow to judge a condition of details of the engine (pistons, rings, valves and saddles, a lining of a head of the block of cylinders).

For reception of exact results of check the engine should be heated-up to normal temperature, and the battery is completely charged.

1. Turn out spark plugs.
2. Completely open throttle заслонку.
3. Disconnect ignition, having connected a wire of the coil to weight. On инжекторных engines disconnect the fuel pump (subsection 5.1.4 see).
4. Insert a compression measuring instrument into an aperture for a candle of 1st cylinder.
5. Include a starter and watch manometre indications. On the serviceable engine pressure should accrue quickly. Low pressure after the first piston stroke and slow increase at the subsequent steps of compression specifies in deterioration of piston rings. If after the first piston stroke pressure low, and at the subsequent steps of compression does not increase, the reason is leak in valves or негерметичность linings or heads of cylinders. Write down the greatest value of a compression.
6. Repeat procedure for other cylinders.
7. Enter into cylinders of a few oil (10–15 sm3). If after oil introduction in the cylinder the compression has raised, it is possible to draw a conclusion on that that piston rings are worn out. If the compression increases slightly leak occurs through valves, or a head lining.
8. If a compression equally low only in two next cylinders most a plausible reason is the lining burn-out between these cylinders.
9. If value of a compression exceeds norm the combustion chamber is covered by a deposit. In this case a head of cylinders it is necessary to remove and remove a deposit.
10. At strong distinction of a compression in cylinders it is necessary to hand over the car on a car repair shop for check of tightness of a head and the block of cylinders a method опрессовки.