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1988 Isuzu trooper 2.6 liter replaced fuel filterfuel pump regulatorfuel pumpplugsbattery and dist cap what would cause it to stall out after 15-20 seconds backfire through air filter box?

-Faulty oxygen sensor

-Vacuum leak

-Faulty ignition coil

-Clogged catalytic converter

-Timing belt misalignment

-Defective fuel injector