Editing Straight-five engine (section)

=== Firing order ===
Most [[four-stroke engine|four-stroke]] straight-five engines use a firing order of 1-2-4-5-3.{{Citation needed|date=May 2023}} This firing order results in the minimal primary (crank speed) [[rocking couple]], and is used by the [[Volvo Modular engine]], [[List of Volkswagen Group petrol engines#Five-cylinder petrols|VW/Audi straight-five engine]], [[General Motors Atlas engine]] and [[Honda G engine]]. Straight-five  engines typically have a 72 degree crankshaft design.<ref name="gimme"/>

All [[two-stroke engine|two stroke]] straight-five engines are limited in having a single firing order for a given crank configuration; because a complete cycle occurs every 360 degrees, there is no chance to share piston phases without having simultaneous ignitions, so the straight-five is at no disadvantage in this case. Some two-stroke [[outboard engine]]s, e.g. the ''Mercury Marine Force 150'' engine use a firing order of 1-5-2-3-4.<ref>{{cite web |url=http://www.boats.net/parts/search/Merc2/Force/150%20H.P.%20%281989-1992%29/1989-A%20THRU%201992-C/CRANKSHAFT%20-%20PISTON/parts.html |title=150 H.P. (1989-1992) Force Outboard 1989-A THRU 1992-C CRANKSHAFT - PISTON Diagram and Parts |access-date=2015-12-02 |url-status=dead |archive-url=https://web.archive.org/web/20151208050058/http://www.boats.net/parts/search/Merc2/Force/150%20H.P.%20%281989-1992%29/1989-A%20THRU%201992-C/CRANKSHAFT%20-%20PISTON/parts.html |archive-date=2015-12-08 }}</ref>