OK, 69 Roadster 350/350 L46 Original. Owned for about 1.5 years now.

Idles great and revs great but when you accelerate it seems to be starving for gas. Acts like you are running out. I've eliminated ignition items for now (replaced everything.) Had a couple guys take a ride that know cars and said it is starving for gas.

I put an extra carb on and same issue so I know it is not that. Examined the fuel delivery system and it would appear that I have a new tank, new sending unit and all the lines look to be intact and healthy. So I put a new fuel pump on and the issue did not go away. Made sure the pickup screen in the tank was not plugged. I also blew air from the engine bay back to the tank through both lines. My next step will be to replace the inline metal fuel filter that is between the carb and fuel pump. How do these filters work with the return line? Is there an internal flap for the return? I blew the return inlet with air when I was replacing the fuel pump and noticed I couldn't get air to go out the pump side of the filter. Then later I thought I could before I put it all back together. Can somebody tell me how this type of filter works and how to diagnose a problem with it? I'm hoping this is the issue. If the filter is blocking the return line then that would cause the "running out of gas" system correct?

Thanks guys!

 

I had a clogged fuel filter, the small on that goes inside the carb. it ran fine until you went wide open throttle then it would start to die until you let off the gas. They only cost $2 each and it fix the issue.

jim

 

I have already put a new one on. Didn't solve it.