Trouble Shooting: Backfiring

WARNING: This page does not describe the selected car, but rather 10 other vehicles, including the 1994 Plymouth Sundance, 1994 Plymouth Acclaim, 1994 Eagle Vision, 1994 Dodge Spirit, and 1994 Dodge Shadow. However, it is still accessible from the selected car via links, so may be relevant.

Ensure ignition timing is correct.
Ensure timing belt/chain has not jumped.
Check distributor (if applicable).
Check for gasoline in oil.
Ensure fuel injectors are not leaking.
Check spark plugs and plug wires.
Check distributor cap and rotor (if applicable).
Check ignition and coil circuit.
Check crank and cam sensors (DIS system).
Check throttle switch and connector.
Check exhaust system.