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).
- 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.
- Flush the engine block with clean water or steam.
- Clean the oil passages.
- Clean the blind holes.
- Spray the cylinder bores and the machined surfaces with engine oil.
- 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.
Note:
Do not attempt to machine the lower crankcase to engine
block surfaces.
- Inspect the engine block for sag in length and width on the sealing surfaces.
- 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.
- Clean the sealing material from the gasket mating surfaces (1) on the lower
crankcase oil pan side.
- Inspect the crankshaft main bearing bores. Use the EN-8087 gauge
(1) to measure the bearing bore concentricity and alignment.
- Replace the engine block and bed plate if the crankshaft bearing bores are
out of specification.
- Inspect the cylinder bores using the EN-8087 gauge (1). Inspect
for the following items:
- Wear
- Taper
- Runout
- Ridging
Check the cylinder bores specifications. Refer to Engine Mechanical Specifications.
If the cylinder bores are out of specification, replace the engine block.
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 ...
Other materials:
Hazard Warning Flashers
(Hazard Warning Flasher): Press
and momentarily hold this button to make the front and rear turn signal lamps flash
on and off. This warns others that you are having trouble. Press and momentarily
hold again to turn the flashers off. ...
Evaporator Air Temperature Sensor Replacement (LHD)
Evaporator Air Temperature Sensor Replacement
Callout
Component Name
1
Evaporator Air Refrigerant Temperature Sensor
Procedures
Disconnect the refrigerant temperature sensor electrical connector.
Twist an ...
Fluid Cooler Inlet Hose Replacement
Removal Procedure
Remove the battery tray. Refer to
Battery Tray Replacement
Remove the front bumper fascia opening lower cover.
Refer to Front Bumper Fascia Opening Lower Cover
Replacement
Remove the front wheelhouse liner inner front extension.
Refer to Front Wh ...
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