[Roscoe]

Chuck and Jerry are correct, BG tech told me the same thing about liquid filled gauges. They also will fluctuate due to the temp of the liquid. You will get different readings when the engine is hot/cold due to the liquid.

However, the best place to start is the pump. Get a vacuum/fuel pressure test gauge and hook it directly to the fuel pump and see if you are putting out the pressure the pump is rated for, usually around 12 psi or so. Then check it at the pressure regulator to make sure that is adjusted properly. Then check it at the carb.

You can get a vacuum/fuel pressure test gauge at any auto parts store and it is not expensive. It is great for tuning the car.

Roscoe