Chevrolet Sonic Repair Manual: Exhaust Manifold Cleaning and Inspection
- Clean the exhaust manifold (1) in solvent.
- Dry the exhaust manifold (1) with compressed air.
- An exhaust manifold leak or damage may cause an exhaust leak and may effect OBD II system performance. A damaged exhaust must be replaced.
Warning:
Wear safety glasses in order to avoid eye damage.
Fuel Tank Heat Shield Replacement
Removal Procedure
Support the fuel tank with a suitable jack.
Remove the fuel tank strap fasteners (1) and lower the fuel tank straps (2).
Remove the ...
Exhaust Manifold Heat Shield Installation
Install the exhaust manifold heat shield (2).
Caution: Refer to Fastener Caution.
Install the 3 exhaust manifold heat shield bolts (1) and the washers and
...
Other materials:
Valve Guide Reaming, and Valve and Seat Grinding
Valve Cleaning Procedure
Use soft bristle wire brush to clean any carbon build-up from the valve
head. DO NOT use a wire brush on any part of the valve stem. The valve stem
is chrome plated to provide enhanced wear characteristics. Wire brushing
the stem could remove the chr ...
Instrument Panel Tie Bar Replacement
Removal Procedure
Remove the Instrument panel assembly. Refer to Instrument Panel Assembly
Replacement.
Remove the steering column and wheel from the vehicle. Refer to Steering
Column Replacement.
Remove the air inlet grill panel. Refer to Air Inlet Grille Panel Replacem ...
Secondary Air Injection System Description
The Secondary Air Injection System aids in the reduction of hydrocarbon exhaust
emissions during a cold start. This occurs when the start-up engine coolant temperature
(ECT) is between −10 to +56°C (14?E33°F), the intake air temperature (IAT) is greater
than −10°C (14°F) and it ...
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