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Home >> Ford >> 1996 >> Aerostar Van Window >> Repair and Diagnosis >> External Pages >> Different car >> Section 226 (Engine Controls - Tests W/O Codes - 4.0L) >> Symptoms >> Spark Knock >> Preliminary Checks

Preliminary Checks

WARNING: This page is about a different car, the 1996 Ford Ranger. However, it is still accessible from the selected car via links, so may be relevant.

Check vacuum hose routing. Check for restricted air intake system. Check engine oil and fuel quality.

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