Create: Engine Engineer

Livelier engines. Exhaust tells the truth: a thin haze when the mixture is right, black when rich, white vapour until the block warms, a blue cast when fuel has thinned the oil, and a crack of flame when unburned fuel meets a hot pipe. Engines cough as they catch, knock as they die, tick as they cool, squeal and spark when they run dry, and draw air in at their intakes. New recordings and white puff and spark particles back all of it.

• Warm-up and cooling: a cold block burns fuel a little worse and warms quickest at idle. A Blaze Burner against the heat exchanger preheats it. A stopped engine ticks and shimmers, and its turbine wheel glows red as it cools.
• Plain-language diagnosis: goggles name an engine Healthy, Running rough or Failing with the one cause to fix first, and say why a cylinder misfired. The Dynamometer shows how a new run compares with the last. Two new Ponder pages cover why an engine will not start and why it runs badly.
• Nothing burns underwater. Water against a cylinder, head or rotor housing stops the engine wherever its pipes lead, and a flooded intake or exhaust shuts as well. Engine parts are no longer washed away by flowing water.
• New advancements: Hard Start, Preheated and Flooded.
• New client settings: engineNoteVolume and mechanicalVolume.