2. Inspect the block for cracks and corrosion. Check the threads in the threaded holes.
3. Inspect the cylinders for scratches and nicks.
16.4a Measure the cylinder diameter at the top (just below the shoulder), in the middle and at the bottom parallel to the crankshaft axis
16.4b Measure the cylinder diameter using a telescopic gauge
16.4v Measure the length of the sensor using a micrometer
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4. Measure the diameter of the cylinders at the top (just below the step), in the middle and at the bottom parallel to the crankshaft axis (16.4a, 16.4b and 16.4c).
5. Then measure the diameter of each cylinder at the same locations across the crankshaft axis.
6. Check the clearance between the pistons and the cylinder walls using a set of feeler gauges.
7. If the cylinder walls are scratched, the cylinders have acquired a conical or oval shape, contact specialists for boring and honing of the cylinders.
8. If the cylinders are in order and the clearances between the cylinder walls and pistons correspond to the required values, then all that is necessary is to hone the cylinders.