Fuel issues, engine cranks but does not start

Hi,

We have access to different manuals. For example, we use Alldata and Prodemand. Both are excellent manuals. However, they are both online. You can access them, but they charge, so it's less expensive if you ask me. LOL

Take care of yourself.

Joe

Hi,

The original system would not have had one. It was a low-pressure mechanical pump. You would have had a supply line from the tank to the pump, and then another line between the pump and carb.

Let me know if that helps.

Joe

Hi,

I'm not sure how that would be done with a carburetor. Are you trying to use the electric pump?

Joe

Hi,

I wouldn't know how that can be done with a carburetor. With fuel injectors, you have a fuel rail that supplies fuel to each of the injectors at one time. When the injectors are triggered, then fuel flows through them. In most designs, fuel enters the fuel rail on one end, and at the other end of the rail is the regulator which allows the fuel to return to the tank once a specific pressure is reached. It's more like a solid hose that goes from the tank to the fuel rail and then back to the tank. With a carburetor, you have a float bowl that fills with fuel and a needle valve that stops the fuel from entering the carburetor. There is no place to install a return.

The only thing I can think of would be to somehow install a return and connect it after the fuel pump with a fuel pressure regulator that is set for the pressure needed. Once that is reached, the regulator would allow fuel to return to the tank. But this is something that should be thorough out to determine what is needed, what pressure is needed, and how can the return be done safely. Also, the present fuel tank sending unit needs to be changed to receive a return.

It isn't a two-minute thing to do. I don't feel comfortable recommending it.

Joe