Cool video shows the combustion process of a four-stroke engineSuck, squeeze, bang, blow... Laura Thomson 09 Nov 2018 IN CASE you were wondering... The referenced media source is missing and needs to be re-embedded.Sponsored ContentSubscribe to our NewsletterGet the latest motorcycling news, reviews, exclusives and promotions direct to your inboxFor more information, read our Privacy Policy Leave this field blank Latest NewsRoad Racing 1h agoRoad Racer Reinstated After Drugs Ban, But is the Matter Settled?Alex SinclairGeneral 1h agoYou Can Now Own a Piece of TT Racing History Isle of Man TT winner's enclosure boardsGeneral 3h agoBikers Denied UK-Wide Bus Lane Accessbus laneGeneral 5h agoKawasaki Ninja 7 Hybrid ABS Receives Second US RecallKawasaki Ninja 7 Hybrid - ridingNew Bikes 5h agoFirst New Bikes From Kymco and LiveWire PartnershipThe first bikes arrive from the Kymco and LiveWire partnershipMore NewsIndustry 5h agoYou Can Now Buy Damon Stocks But Not The Actual Bike!Damon HyperSportNew Bikes 6h agoChinese-Built 2025 KTM 790 Adventure Replaces 890New KTM 790 AdventureViral 6h agoMarc Marquez Explains Gresini Middle Finger SaluteMarc Marquez Gresini saluteNew Bikes 23h agoUpdated BMW F900 R and XR announced for 2025The 2025 BMW F900 R and F900 XRRoad Racing 21/11/24David Johnson “Battered” but Confirms Isle of Man TT Return in 2025Davo Johnson Isle of Man TT