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welder



Joined: 26 Nov 2007
Posts: 265
Location: North Warwickshire
PostPosted: Thu Oct 03, 2013 10:14 pm    Post subject: Reply with quote
Jim.Walker wrote:
ALL my money is on Uncle Alec's suggestion.
Contrary to the weak mixture theory. A rich mixture will pass into the exhaust partly unburnt for lack of sufficient oxygen. Fresh oxygen leaking in often causes a BANG!
Jim.


Fully agree. Years ago I was a mobile Plant Fitter and had the use of a petrol engined ex-military Land Rover. It frequently emulated a shotgun within several seconds of being switched off.

I well remember pulling up to the pumps at a motorway service station, switching off and walking round to the pump. BANG! Several people were sufficiently startled to duck!

I knew even then what caused it but found it entertaining so did nothing about it. Laughing

Ian
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