Table of Contents
Where is the fuel pipe?
A typical fuel system A single fuel pipe runs from the tank, under the floor of the car to a mechanical pump on the engine. The pump delivers fuel to the carburettor.
How do you depressurize a Miata fuel system?
Simply shut the car off, and wait an hour. The system will be de-pressurized. I performed the change after leaving the fuel tank open for about an hour or so and nothing else. It wasn’t too bad although I spilled about half gallon of fuel.
What size are Miata fuel lines?
5/16″ fuel hose. For some reason none of the hoses or O-Rings I found for the Miata are metric sizes.
What is a fuel return line?
The fuel return hose is a fuel system hose that is found on vehicles equipped with carburetors. Aside from providing a path for excess fuel to return to the tank, the fuel return hose also prevents vapor lock and over pressurization from occurring within the carburetor.
Where does fuel return line go?
The return line should direct fuel close to the bottom of the tank and away from the pickup.
Where does the fuel return line connect to?
The vapour-return line normally runs from the fuel pump or the fuel filter to the fuel tank. This vapour-return line is connected to a special outlet in the fuel pump. Any vapour that forms in the fuel pump returns to the fuel tank through this line.
Where is the fuel filter cover on a Miata?
If you wrap a rag around the filter line when twisting the first fuel line loose, the tiny spurt of fuel will be absorbed by the rag. Crawling under the passenger side rear bumper, locate the fuel filter cover.
Can a fuel line still be filled with fuel?
Lines are still filled with fuel and can dribble out by gravity. Still not 100 % depressurized, since will still retain a tiny amount of pressure. If you wrap a rag around the filter line when twisting the first fuel line loose, the tiny spurt of fuel will be absorbed by the rag.
What happens when you remove the fuel cap?
Removing the fuel cap does not depressurize fuel to the filter or the fuel rail. It merely relieves pressure in the fuel tank and return fuel line from the stock FPR. This step is rather minor as we are working on the other side of the FPR.