Quote:
Originally Posted by mozul
My car does not have a fuel shuttoff solenoid. However, it does have an electric fuel pump. I could cut the power to the fuel pump, but there is no point in that. The fuel pump provides fuel to the carb at 3psi. It is automatically controlled by the float valve in the carb. When there is room in the carb for more fuel, the float lowers and opens the valve. The fuel then enters the carb and fills up the float tank. When the float tank is full, the valve is closed, but the fuel pump continues to pump though it is a sloppy pump, the fuel doesn't move in the line.
I don't use the engine for braking. I want to use as little brakes as possible to maximize my coasting. If I used the engine for braking, it would simply restart since it is the same as bump starting.
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I've read some polish article few years ago about carburetors and changing main nozzle to the one with cut off valve for engine breaking purposes. Because if you try to do engine breaking with carburated engine the vacuum is building rapidly and it can suck the fuel out of carburetor very quickly. Anyway I got this idea of simple electronic unit that would allow DFCO and fuel cut off kill of the engine in a carburated car with such cut off nozzle.
Don't know if there are such nozzles with electrovalves for every carb though.