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:
Body Panel Paint Protector Replacement (VGC)
The paint protective film and vehicle surface temperature should be 13?€“32?°C
(55?€“90?°F) for best results.
Automatic car washes should be avoided for at least 24?€‰hours after the
paint protective film application.
Wipe the vehicle surface with isopropyl alcohol or fl ...
Front Fender Replacement
Front Fender Replacement
Callout
Component Name
Preliminary Procedures
Remove the front bumper fascia. Refer to Front Bumper Fascia Replacement.
Remove the headlamp. Refer to Headlamp Replacement.
Remove the front whe ...
Rear Side Door Window Weatherstrip Replacement (Hatchback)
Rear Side Door Window Weatherstrip Replacement
Callout
Component Name
Preliminary Procedure
Remove the rear side door window . Refer to Rear Side Door Window Replacement.
1
Rear Side Door Window ...
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