Hi,
There should be a filter where the fuel line is attached to the carb. They used a small filter that sat inside the carburetor.
Based on the description, it sounds like it isn't getting the fuel it needs. That can be caused by a few things. The pump is failing, the needle and seat in the carburetor aren't allowing enough fuel to get into the engine, or the fuel pump is actuated by a push rod that mechanically moves when a lobe on the camshaft pushes on it. The lobe on the camshaft may be worn and not provide enough of a plunge.
To narrow it down, you should check the pressure from the pump. Also, if you didn't replace the internal filter where the fuel line is attached? I would do that as well.
Let me know.
Joe
Friday, December 29th, 2023 AT 8:49 PM