P01.00-2625-06
04 Cylinder leaktightness tester
R4 Spark plugs
| Remove/Install | ||
Danger! | Risk of accident caused by vehicle starting off by itself when engine is running. Risk of injury caused by contusions and burns when working in engine during starting procedure | Secure vehicle to prevent it from moving. | |
1 | Bring engine to operating temperature (approx. 80 °C ) | Check the cylinder for leaks only when the engine is at normal operating temperature. | |
Danger! | Risk of injury to skin and eyes suffering scalding from contact with hot coolant spray. Risk of poisoning from swallowing coolant. | Do not open cooling system unless coolant temperature is below 90 °C. Open cap slowly and release the pressure. Do not pour coolant into beverage bottles. Wear protective gloves, protective clothing and eye protection. | |
2 | Open cap of expansion reservoir | Turn the 1-stage and 2-stage cap half a revolution counterclockwise, relieve the pressure, then unscrew the 1-stage or 2-stage cap. | |
3 | Remove a spark plug from each cylinder | ||
| Replace spark plugs | ||
4 | Position piston of cylinder to be tested to ignition TDC | Crank the engine at the center bolt of the crankshaft in the direction of rotation of the engine. | |
5 | Connect cylinder leakage tester (04) | Calibrate cylinder leakage tester (04) and screw the connection hose into the spark plug bore | |
Cylinder leak tester | |||
6 | Remove oil filler cap | ||
| Check | ||
7 | Apply compressed air to the cylinder, read off pressure loss on the cylinder leakage tester (04) and determine the cause if there is an increased pressure loss | Cylinder leaktightness permissible loss total indication | |
Cylinder leaktightness permissible losses at valves and cylinder head gasket | |||
Cylinder leaktightness permissible losses at pistons and piston rings | |||
If the crankshaft rotates: | |||
Install retaining lock for crankshaft | |||
8 | Carry out test of the other cylinders in the firing order of the engine | ||
9 | Install in the reverse order |
Cylinder leakage
Number | Designation | All engines | ||
BE01.00-P-1001-02Z | Cylinder leaktightness permissible loss total indication | % | 25 | |
BE01.00-P-1002-02Z | Cylinder leaktightness permissible losses at valves and cylinder head gasket | % | 10 | |
BE01.00-P-1003-02Z | Cylinder leaktightness permissible losses at pistons and piston rings | % | 20 | |
Commercially available tools
Referenced documents
- ap1510p1580vt Replace spark plugs
- ar0100p130003ha Firing order
- ar0330p5000b Remove/install retaining lock for crankshaft/ring gear
- as0000z000501a Risk of accident from vehicle starting off by itself when engine running. Risk of injury (bruises and burns) resulting from working on the engine while it is being started or when it is running.
- as2000z000101a Risk of injury to skin and eyes suffering scalding from contact with hot coolantspray. Risk of poisoning from swallowing coolant.