Piston check (Peugeot 307)

After removing deposits, clean the piston with connecting rod with a suitable solvent and wipe dry.

Carefully inspect each piston for cracks around the skirt and piston pin holes.

Check for wear on the piston skirt, bores in the piston head, and for burnout at the top of the piston.

Pitting marks on the piston indicate that coolant has entered the combustion chamber. It is necessary to find out the cause of fluid entering the combustion chamber and eliminate it.

Determine the clearance of the piston in the cylinder, equal to half the difference between the diameters of the cylinder and piston.

Check each connecting rod for wear, cracks, and distortion.

Connecting rods usually do not require replacement unless the engine is stuck.

Measure the piston diameter.

Measure the clearance in the piston ring lock.

Check clearance between piston ring and piston groove.

Before installing the piston in the cylinder, the piston rings must be compressed with a band clamp.