Posts: 3480
Location: Elk River, Minnesota | Almost-B-Good - 3/19/2012 10:27 AM
There is a big difference between an automobile fuel system which is more or less closed to the outside air and a boat or small engine system that has continually open vents.
I will definitely disagree with you here. No engine that burns fuel is a closed system to the outside air....it has to have air in order to create the correct mixture with fuel for good combustion. Your car/truck, etc has an air filter which cleans the air as it is drawn into the system to mix with the fuel. It goes into an injection system, either mechanically (carb) or through EFI, then to a combustion chamber, is compressed and ignited, then is expelled through an exhaust manifold and out to the open air. Your car engine has much more items on it to control for optimum performance such as an egr system to burn unspent fuel, etc. vaccum hoses to run other items, etc, but no matter what, they all do the same thing...draw air in, combine it with fuel, combust it, and expell it. No simpler than that. That is basic engine mechanics 101....
Steve
Edited by VMS 3/19/2012 2:05 PM
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