Originally Posted by Festinghouse
its strange that kerosene was used in petrol engines as kerosene which is basically the same as jetA1 fuel, has very similar properties to diesel - which as we know doesnt work in a petrol. jetA1 is at times used to power diesel engines such as airport vehicles.
Kerosine engines with carburettors usually have a slightly lower compression than normal petrol engines & need to be very hot before you can swap over from petrol to Kerosine / paraffin or like the old T.V.O. ( tractor vaporising oil ) engines often the fuel / carb is preheated by the exhaust or hot water
Diesel engines inject or atomise the fuel similar to jet engines rather than having carbs . Me old outboard was just like a standard Yamaha 15 2 stroke but had a lower cylinder compression & the timing was slightly different , think the thermostat ran hotter , the carb float chamber was heated by a hot water pipe from the cooling water , also had 2 fuel pumps back to back & 2 float chambers it tended to leave an oily sooty film all around the stern of the boat .