In order to get an engine running, it first needs to be rotated at sufficient speed. This gets the fuel pumped up to the cylinders and ignited and enables the engine to run on its own power. Cranking the engine simply means turning the engine's crankshaft that rotates the engine to power itself.
>  *Hint: If you have a fresh new engine ready for cranking, and you want to prepare the configuration for the first start, please first see: [First Engine Start](First-Engine-Start).*
rusEFI has a separate cranking control strategy for your first couple of engine revolutions - usually, you want more fuel, different timing and simultaneous injection to start an engine. The engine would start rich, as long as it's not too rich, as long as you have a close-enough cranking timing angle.
- *Smarter cranking logic. When enabled, the ignition and fuel injection will start right after the first sync point of the primary [trigger wheel](All-Supported-Triggers).*
- *Please be aware that this mode currently works only for certain trigger wheel types (e.g. 60-2, 36-1).*
*Prime injection pulse uses for Wall wetting before cranking. You can set-prime pulse for the cold engine (-40 celsius degree) and set the hottest temperature for use this setting.*
*We use interpolation from smaller CLT to biggest CLT, to make line function for pulse width and interpolate pulse width from bigger(we set it in settings) to zero(when CLT>= falloff temperature).*
*This sets the temperature above which no priming pulse is used. The value at -40 is reduced until there is no more priming injection at this temperature.*
*Base duration of the fuel injection during cranking, this is modified by the multipliers for CLT, IAT, TPS ect, to give the final cranking pulse width. Used only if "Fuel Source for cranking" option is set to "Fixed".*
*This enables the various ignition corrections during cranking (IAT, CLT, FSIO and PID idle).*
### Use fixed cranking dwell
*If set to true, will use the specified duration for cranking dwell. If set to false, will use the specified dwell angle. Unless you have a really good reason to, leave this set to true to use duration mode.*
*This is the duration in cycles that the IAC will take to reach its normal idle position; it can be used to hold the idle higher for a few seconds after cranking to improve startup.*
*This setting overrides the normal multiplication values that have been set for the idle air control valve during cranking. If this setting is enabled the "IAC multiplier" table in the Cranking settings tab needs to be adjusted appropriately or potentially no IAC opening will occur.*
A Cold engine usually requires more cranking fuel; cranking fuel usually tapers down during cranking since more fuel is needed in the beginning and not really needed later.
If you have flooded your engine, i.e. got too much fuel on your spark plugs, "Cylinder Cleanup" is recommenced - i.e. cranking with wide-open throttle without any fuel squirted into the cylinders in order to ventilate your cylinders.
For 1.6 Honda cranking settings see [this image](https://rusefi.com/forum/download/file.php?id=4536) (note that "base fuel" = 1 is recommended these days, with a corresponding change to cranking temperature multiplier)
