Chevrolet Sonic manuals

Chevrolet Sonic Repair Manual: Engine Block Cleaning and Inspection

Special Tools

EN-8087 Cylinder Gauge

For equivalent regional tools, refer to Special Tools.


    Clean the sealing material from the gasket mating surfaces (2).
  1. Clean the sealing material from the gasket mating surfaces (2).
  2. Clean the engine block (1) and lower crankcase in a cleaning tank with solvent appropriate for aluminum. Refer to Adhesives, Fluids, Lubricants, and Sealers for the recommended solvent.
  3. Flush the engine block with clean water or steam.
  4. Clean the oil passages.
  5. Clean the blind holes.
  6. Spray the cylinder bores and the machined surfaces with engine oil.
  7. Inspect the threaded holes. Clean the threaded holes with a rifle brush. If necessary, drill out the holes and install thread inserts. Refer to Thread Inserts.


  8. Note:

    Do not attempt to machine the lower crankcase to engine block surfaces.

  9. Inspect the engine block for sag in length and width on the sealing surfaces.

  10. Inspect the engine block for distortion along the diagonals.

    If the deck surface is out of specification, replace the block. Do not machine the block.


  11. Clean the sealing material from the gasket mating surfaces (1) on the lower crankcase oil pan side.

  12. Inspect the crankshaft main bearing bores. Use the EN-8087 gauge  (1) to measure the bearing bore concentricity and alignment.
  13. Replace the engine block and bed plate if the crankshaft bearing bores are out of specification.

  14. Inspect the cylinder bores using the EN-8087 gauge  (1). Inspect for the following items:
  • Check the cylinder bores specifications. Refer to Engine Mechanical Specifications.
  • If the cylinder bores are out of specification, replace the engine block.
  • Engine Block Disassemble
    Remove the cylinder head locating (1, 2). Remove the oil pressure switch (1). Remove the knock sensor bolt (2) and the knock sensor (1). Clea ...

    Cylinder Block
    ...

    Other materials:

    Parking
    If the vehicle has a manual transmission, before getting out of the vehicle, move the shift lever into R (Reverse) if parking on a downhill slope. On a level surface or an uphill slope, use 1 (First) gear. Firmly apply the parking brake. Turn the wheels toward the curb for a downhill slope, or ...

    Special Tools
    Illustration Tool Number/ Description EN-45059 J-45059 Angle Meter ...

    Parking Brake Indicator Switch Replacement
    Removal Procedure Remove the front floor console. Refer to Front Floor Console Replacement. Ensure that the park brake lever is in the fully released position. Disconnect the electrical connector from the park brake warning indicator switch. Remove the park ...

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