2. Remove spark plug 1 (see fig.3.53).
Pic. 3.53. Engine compression check:
1. spark plug,
2. Ignition coil,
3. Compressometer,
4. Throttle.
3. Disconnect the wiring connector from the ignition coil 2.
4. Insert compression gauge 3 into spark plug hole 1.
5. Start the engine with the starter approximately 8 times. Take measurements for all cylinders in the same order.
- New engine compression: 10-13 bar.
- Worn engine compression: 7.5 bar.
- Permissible deviation between cylinder pressures: 3 bar.