What is the spark plug Firing order for Pontiac Fiero with 4 and 6 cylinder engines Posted by Support Staff on 10th May 2017 1984-88 Pontiac Fiero distributor Firing Order Engine 2.8 Liter V6 - Distributor ignition Engine 2.5 Liter 4 Cylinder - Distributor ignition Firing order 1-3-4-2 Distributor rotates Clockwise. Engine 2.5 Liter 4 Cylinder - Distributor-less ignition Firing order 1-3-4-2 Waste Spark System. #Pontiac Fiero Firing Order Facebook Email Print Twitter Linkedin Pinterest