FREE REPAIR MANUALS & LABOR GUIDES 1982-2013 Vehicles
Courtesy of Operation CHARM
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Car repair manuals for everyone.
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Mercury
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1994
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Topaz L4-140 2.3L HSC
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Repair and Diagnosis
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Powertrain Management
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Emission Control Systems
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Air Injection
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Testing and Inspection
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Component Tests and General Diagnostics
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Diagnosis By Symptom
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Engine Noise (Hiss)
Engine Noise (Hiss)
CONDITION
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Engine noise - (hiss)
POSSIBLE SOURCE
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Secondary air hose leaks or disconnects.
ACTION
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Visual inspection of hoses and connections.