1995 4runner

[laylad661]

I have a 1995 toy 4runner 3.0L auto and the engine was replaced with a rebuilt unit. Everything is now all put together and the vehicle will start and run for a few seconds before stalling out. The intake will fill with fuel. We disconnected the cold start fuel injector, but still filling up.
The cat. converter was stolen a few months ago, but that has nothing to do with it. Anyone have any tips?

[jetwhine]

laylad661,

I'm thinking that you may have a problem with the fuel regulator. There is a vacuum line from the intake manifold that goes to the VSV (variable switching valve) that controls the fuel regulator. If the fuel pressure regulator is leaking internally and it is leaking in the vacuum portion of the regulator, the fuel will be sucked into the manifold at an uncontrolled rate. You can pull the vac line off of the VSV and see if fuel is coming out of it when the engine starts. That is the only way I can see that raw fuel can get into the manifold, other than the cold start injector.