Backfire. Chevrolet Tracker

For 1990-2009 cars only

Makes 🢒 Chevrolet 🢒 2001 🢒 Tracker - 4WD 🢒 Engine 🢒 Engine Electrical 🢒 Backfire

Checks

Action

DEFINITION: The fuel ignites in the intake manifold, or in the exhaust system, making a loud popping noise.

Preliminary Check

•	Refer to Diagnostic System Check - Engine Controls .

•	Refer to Symptoms - Engine Controls .

Ignition System Checks

•	Check for the proper secondary voltage output with a J 26792 spark tester, or an equivalent. Refer to Electronic Ignition (EI) System Diagnosis .

•	Inspect the spark plugs for correct operation and performance. Refer to Spark Plug Inspection .

Engine Mechanical Checks

•	Check for any of the following engine mechanical problems:

-	Broken or weak valve springs

-	Low compression

-	Sticking or leaking valves

-	Incorrect valve timing

-	Incorrect or worn camshaft

•	Refer to Engine Compression Test in Engine Mechanical.

•	Check the intake and exhaust system for casting flash or other restrictions.

Additional Check

Check for a leaking or sticking exhaust gas recirculation (EGR).