Harry Macdonald:
And what really is the problem with a wee spark?
When I was a lad, every car had at least three continuously sparking devices, the dynamo, the points and the distributor, and the starter motor added a fourth when it was time to go. I never heard of any of these causing a fire.
You forgot the spark plugs, which do create fires, albeit controlled ones. ?
In fact petrol is not as easy to ignite as most people imagine. Think of a petrol lighter - they need a wick. The spark ignites petrol vapour, which is also the form of the petrol by the time that it reaches the combustion chamber.
Harry Macdonald:
And what really is the problem with a wee spark?
When I was a lad, every car had at least three continuously sparking devices, the dynamo, the points and the distributor, and the starter motor added a fourth when it was time to go. I never heard of any of these causing a fire.
You forgot the spark plugs, which do create fires, albeit controlled ones. ?
In fact petrol is not as easy to ignite as most people imagine. Think of a petrol lighter - they need a wick. The spark ignites petrol vapour, which is also the form of the petrol by the time that it reaches the combustion chamber.
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