The firing order depends on the application: Mustang 1-5-4-8-6-3-7-2; F-150 2011-2014 1-5-4-8-6-3-7-2; F-150 2015, 2016, 2019, 2020 1-3-7-2-6-5-4-8.
Firing order diagram
Mustang: firing order 1-5-4-8-6-3-7-2. The small number by each cylinder is its place in the firing order.F-150 2011-2014: firing order 1-5-4-8-6-3-7-2. The small number by each cylinder is its place in the firing order.F-150 2015, 2016, 2019, 2020: firing order 1-3-7-2-6-5-4-8. The small number by each cylinder is its place in the firing order.