This video is an attempt to show the complete process of resolving a difficult engine starting situation. The engine hasn't been run for 10 years, it's locked solid with congealed fuel residue, and the midwinter temperature is only 1 or 2°C.
You'll see that we get the engine running within a reasonable time (around 3mn 30sec), and it takes another minute or two to achieve a first flick starting situation... Not bad in 1 or 2°C...