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Home >> Toyota >> 1981 >> Pickup Base >> Repair and Diagnosis >> Engine Mechanical >> Mechanical >> Engine Trouble Shooting >> Condition & Possible Cause >> Intake Backfire

Intake Backfire

Improper ignition timing.
Faulty accelerator pump discharge.
Improper choke operation.
Defective EGR valve.
Too lean fuel mixture.
Initial choke valve clearance too large.

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