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I got into a discussion with a friend on how to prime a Lycoming engine. He as a 540 and I have a 360, both have carbs. I have always been told to use the primer and it has worked well for me. I have also always been told that using the throttle is a good way to cause an engine fire. He has always used the throttle to prime and swears that the primer is more likely to cause an engine fire.
My question is how does pumping the throttle cause an engine fire? As long as the engine is being turned then the fuel is being sucked in to the cylinders. He also pointed out that since a primer puts fuel directly in the cylinders, the fuel could possibly drain into the exhaust and cause a fire.
I will continue to use the primer but just wanted to better understand why.
My question is how does pumping the throttle cause an engine fire? As long as the engine is being turned then the fuel is being sucked in to the cylinders. He also pointed out that since a primer puts fuel directly in the cylinders, the fuel could possibly drain into the exhaust and cause a fire.
I will continue to use the primer but just wanted to better understand why.
